View source for Shield of the Trinity

{{Short description|Visual symbol expressing the Christian Trinity}}
{{More footnotes needed|date=February 2017}}
[[File:Shield-Trinity-Scutum-Fidei-English.svg|thumb|Basic "Shield of the Trinity" diagram]]
The '''Shield of the Trinity''' or '''{{Lang|la|Scutum Fidei}}''' ([[Latin]] for {{Gloss|shield of faith}}) is a traditional [[Christianity|Christian]] visual [[Christian symbolism|symbol]] which expresses many aspects of the doctrine of the [[Trinity]], summarizing the first part of the [[Athanasian Creed]] in a compact diagram. In late medieval [[Europe]], this emblem was considered to be the [[Heraldry|heraldic arms]] of God, and of the Trinity.

==Description==

This diagram consists of four nodes, generally circular in shape, interconnected by six links. The three nodes at the edge of the diagram are labelled with the names of the three persons of the [[Trinity]], traditionally the [[Latin|Latin-language]] names, or [[scribal abbreviation]]s thereof: [[God the Father|The Father]] ({{Lang|la|PATER}}), [[God the Son|The Son]] ({{Lang|la|FILIUS}}), and [[Holy Spirit in Christianity|The Holy Spirit]] ({{Lang|la|SPIRITUS SANCTUS}}).

The node in the center of the diagram, within the triangle formed by the other three nodes, is labelled [[God in Christianity|God]] (Latin {{Lang|la|DEUS}}). The three links connecting the center node with the outer nodes are labelled ''is'' (Latin {{Lang|la|EST}}). The three links connecting the outer nodes to each other are labelled ''is not'' (Latin {{Lang|la|NON EST}}).

The links are non-directional—this is emphasized in one thirteenth-century manuscript<ref name="auto">{{cite web|url=http://www.bl.uk/onlinegallery/onlineex/illmanus/cottmanucoll/d/011cotjuld00007u00003v00.html|title=Diagram of the Shield of the Trinity, in a Compilation of John of Wallingford's Works|first=Colin|last=Wight|publisher=British Library}}</ref> by writing the link captions {{Lang|la|EST}} or {{Lang|la|NON EST}} twice as many times, going in both directions within each link. It is shown in some modern versions of the diagram by superimposing each occurrence of the ''is'' / ''is not'' text on a double-headed arrow ↔ rather than enclosing it within a link. So the following twelve propositions can be read off the diagram:

* "The Father is God"
* "The Son is God"
* "The Holy Spirit is God"
* "God is the Father"
* "God is the Son"
* "God is the Holy Spirit"
* "The Father is not the Son"
* "The Father is not the Holy Spirit"
* "The Son is not the Father"
* "The Son is not the Holy Spirit"
* "The Holy Spirit is not the Father"
* "The Holy Spirit is not the Son"

The Shield of the Trinity is not generally intended to be any kind of schematic diagram of the structure of God, but instead is merely a compact visual device from which the above statements, contained in or implied by the [[Athanasian Creed]] can be read off.

==History==
[[File:PetrusPictaviensis CottonFaustinaBVII-folio42v ScutumFidei early13thc.jpg|thumb|The earliest attested version of the diagram, from a manuscript of [[Peter of Poitiers]]' writings, c.&nbsp;1210]]
[[Image:Tetragrammaton-Trinity-diagram-12thC.jpg|thumb|right|[[Petrus Alphonsi|Petrus Alfonsi]]'s early 12th-century [[Tetragrammaton]]-Trinity diagram, a probable precursor to the Shield of the Trinity]]
[[Image:Trinity knight shield.jpg|thumb|right|From [[William Peraldus]]' {{Lang|la|Summa Vitiorum}}, c. 1255–1265. Includes {{Lang|la|e converso}} {{Gloss|vice versa}} in the link captions to clarify that links are bidirectional.]]

The precise origin of this diagram is unknown, but it was evidently influenced by 12th-century experiments in symbolizing the Trinity in abstract visual form—mainly by Petrus Alfonsi's [[Tetragrammaton]]-Trinity diagram of {{Circa|1109}}, and possibly also by [[Joachim of Fiore]]'s different Tetragrammaton-Trinity diagram of three circles, which led to the [[Borromean rings]] being used as a symbol of the Trinity,<ref>{{cite web |url=http://www.liv.ac.uk/~spmr02/rings/trinity.html |title=Borromean Rings in Christian Iconography |access-date=2012-04-07 |url-status=dead |archive-url=https://web.archive.org/web/20120414231546/http://www.liv.ac.uk/~spmr02/rings/trinity.html |archive-date=2012-04-14 }}</ref> in combination with the Athanasian Creed.

The Shield of the Trinity diagram is attested from as early as a [[:Image:PetrusPictaviensis CottonFaustinaBVII-folio42v ScutumFidei early13thc.jpg|c. 1208–1216 manuscript]] of Peter of Poitiers' {{Lang|la|Compendium Historiae in Genealogia Christi}}. The period of its most widespread use was during the 15th and 16th centuries, when it is in found in a number of English and French manuscripts and books (such as the [[Sherborne Missal]]<ref>{{cite web|url=http://www.bl.uk/onlinegallery/sacredtexts/sherborne.html|title=Sacred Texts: Sherborne Missal|publisher=British Library}}</ref>), and as part of [[#15th- or 16th-century church decorations|stained-glass windows and ornamental carvings]] in a number of churches, many in [[East Anglia]].

The diagram was used [[heraldry|heraldically]] from the mid-13th century, when a shield-shaped version of the diagram, not actually placed on a [[shield]], was included among the c. 1250 heraldic shields in [[Matthew Paris]]' {{Lang|la|Chronica Majora}}. The c.&nbsp;1260 allegorical illustrations of a knight battling the [[seven deadly sins]] in a manuscript of [[William Perault|William Peraldus]]' {{Lang|la|Summa Vitiorum}}, and of a woman penitent fending off diabolical attacks in the De Quincy Apocalypse, show the diagram placed on a shield. In the 15th century, one form of the Shield of the Trinity was considered to be the coat of arms of God, see discussion below.

The use of the diagram declined in England with the rise of [[Protestantism]]. From the 17th century to the early 19th century, it was mainly of interest to historians of heraldry. Beginning in the 19th century it underwent a limited revival as an actively used Christian symbol among English-speaking Christians, partly due to being included in books such as the 1865 ''Handbook of Christian Symbolism'' by [[William Audsley|William James Audsley]] and [[George Ashdown Audsley]].

==Name==
The only name for this diagram which was in any regular use during the Middle Ages was {{Lang|la|Scutum Fidei}}, a Latin phrase meaning {{Gloss|Shield of the Faith}}, taken from the [[Vulgate]] of [[Epistle to the Ephesians|Ephesians]] verse 6:16. For example, in this c. 1247–1258 manuscript of [[John of Wallingford (d. 1258)|John of Wallingford]]'s writings, the quote from Ephesians 6:16 is placed directly above the diagram.<ref name="auto"/>

The particular phrase ''Shield of the Trinity'', which is now the most common name for the diagram in English, came into regular use in the 20th century. It is called in Latin {{Lang|la|Scutum Sancte Trinitatis}} or {{Gloss|Shield of the Holy Trinity}} (where {{Lang|la|sancte}} is a [[Medieval Latin|medieval]] form for more classical {{Lang|la|sanctae}}) on the [[Baptismal font|font]] in Crosthwaite Church, near [[Keswick, Cumbria]], England. Other variant names are ''Arms of the Trinity'', ''Shield of the Blessed Trinity'', ''Emblem of the Trinity'', ''Arms of the Faith'', ''Emblem of the Holy and Undivided Trinity'', etc.

==Variations==
Some variations of the Shield of the Trinity diagram are shown in the image below:

[[Image:Shield-Trinity-Scutum-Fidei-variations.svg|center|thumb|400px|Four variants of the Shield of the Trinity]]
[[File:Battle of Agincourt Trinity Banner (1833 reconstruction).jpg|thumb|An 1833 reconstruction of the Agincourt banner of the Trinity]]
A shield-shaped version of the diagram placed on a red shield (heraldic "gules") was [[Attributed arms|attributed]] as the [[Coat of arms|arms]] of God (and of the Trinity) by heralds in 15th-century England and France. The "banner of the Trinity" which [[Jean Le Fevre de Saint-Remy|Jean Le Fevre]], Seigneur of St. Remy, and [[Jehan de Waurin|Jehan de Wavrin]] attest that [[Henry V of England]] displayed at [[Battle of Agincourt|Agincourt]] would have been the same, but with the [[emblem]] on a red flag instead of a red shield. This coat of arms was given the following heraldic [[blazon]] in "On Sacred Heraldry" by E.L. Blackburne, attached as Appendix II to ''Emblems of the Saints, By which they are Distinguished in Works of Art'' by [[F. C. Husenbeth]], edited by Augustus Jessopp, 3rd.ed. 1882:<blockquote>Gules, an orle and pall Argent, conjoined and surmounted of four plates, occupying the dexter and sinister chief and the base and fess points respectively; the first inscribed "{{Lang|la|Pater|italic=no}}", the second "{{Lang|la|Filius|italic=no}}", and the third "{{Lang|la|Spiritus Sanctus|italic=no}}", the centre "{{Lang|la|Deus|italic=no}}"; the connecting portions of the orle between them having the words "{{Lang|la|non est|italic=no}}", and those of the pall "{{Lang|la|est|italic=no}}".</blockquote>The diagram on a blue shield (heraldic "azure") was the coat of arms of the Priory of [[Canons Regular of Saint Augustine|Black Canons]] ([[Holy Trinity Priory, Aldgate|monastery of Christ Church]]) near [[Aldgate]] in the [[City of London]]. See also the 15th-century coat of arms attributed to [[Michael (archangel)|St. Michael the Archangel]] and the modern coat of arms of the Anglican diocese of Trinidad [[#Links to depictions of the Shield of the Trinity diagram|shown below]]. Two of the [[#13th-century manuscripts|13th-century manuscripts]] have the diagram on a green shield (heraldic "vert"), which is also found in the coat of arms of [[Trinity, Jersey|Trinity Parish]], Jersey [[#Links to depictions of the Shield of the Trinity diagram|shown below]]. Green is the color of [[Trinity Sunday]] or the Trinity liturgical season in some traditions.

Other variant forms of the diagram have the lettering on nodes and links with a yellow background color (instead of white), since "or" (i.e. gold/yellow) is the other [[Tincture (heraldry)|heraldic "metal" color]]. So the arms attributed to [[St. Faith]] in late medieval England consist of a diagram with lettering on yellow, placed on a red or blue shield, while the parish of the [[Forest, Guernsey]] uses a diagram with lettering on white or yellow nodes and links, placed on a green shield.

In the Middle Ages, the shield-shaped version of the diagram was sometimes imagined as a protective shield wielded by the Archangel Michael, or by an ordinary soul, in the [[spiritual warfare]] against dark forces described in [[Epistle to the Ephesians|Ephesians]] chapter 6, as in the {{c.|1260}} allegorical illustrations in manuscripts of Peraldus' {{Lang|la|Summa Vitiorum}} and the De Quincy Apocalypse.

A symmetrical rounded form of the diagram with one [[vertex (geometry)|vertex]] up and two down was popularized in the modern period by the Audsleys' ''Handbook of Christian Symbolism''. This rounded form also occurs with one vertex down and two up. The outer node captions can be reduced to simple initials ("P", "F", and "SS"). On the coat of arms of Trinity Parish, Jersey [[#Links to depictions of the Shield of the Trinity diagram|shown below]], all four node captions are reduced to single initials. In some late medieval English church decorations (such as the bench end at Holy Trinity church,<ref>{{cite web|url=http://www.suffolkchurches.co.uk/Blythburgh.htm|title=Suffolk Churches: Blythburgh}}</ref> [[Blythburgh]], [[Suffolk]] and the font at St John the Baptist church,<ref>{{cite web|url=http://www.suffolkchurches.co.uk/butley.html|title=Suffolk Churches: Butley}}</ref> [[Butley, Suffolk]]) the four connected circles are intended as a symbol of the Trinity even when all text is omitted.

Many further slight artistic variations can occur in the relative sizes of nodes and links, their exact placement, in lettering styles, in further decorative elaboration, etc. Occasionally one or more of the outer nodes is drawn as a non-circular shape to fit within a space allotted.

The diagram can be color-coded in order to bring out the interrelationships between its elements more clearly. In the version included above, the positive or asserting parts of the diagram are shown in black, while the negative or denying parts of the diagram are in red. This is similar to the version of the Shield of the Trinity present in a 15th-century stained glass window in St. Peter and St. Paul church, Fressingfield, Suffolk, England, where only the positive or asserting parts of the diagram are shown—see link [[#15th- or 16th-century stained-glass windows and carvings in churches|below]].

A version of the diagram with translated English-language captions is shown in the illustration above. For simplicity, the [[Article (grammar)|definite article]] could also be left out of the English translations of the outer node captions, as in the next illustration below. In the Middle Ages, [[Latin]] was the liturgical language and main language of scholarship of Western Europe, so that Latin captions were then most often used. At least one old rendition of the diagram in another language is attested in the c.&nbsp;1260 [[Anglo-Norman language|Anglo-Norman]] French allegorical illustration in the De Quincy Apocalypse.

===Orientation of diagram, and placement of outer node captions===
As the First Person of the Trinity, the Father is always in the most honorable position in the diagram. So in the form of the diagram with one vertex down, the caption {{Lang|la|PATER}} or ''Father'' is always placed in the top left node, which is [[Dexter and sinister|heraldically]] the top right or "dexter chief", when considered from the point of view of someone holding the shield from behind. In the form of the diagram with one vertex up, the caption {{Lang|la|PATER}} or Father is always placed in the topmost node. The placement of the captions {{Lang|la|FILIUS}} or ''Son'' and {{Lang|la|SPIRITUS SANCTUS}} or ''Holy Spirit'' in the remaining two outer nodes can vary.

In the 13th-century versions of the diagram, the caption {{Lang|la|FILIUS}} is placed in the bottom node. Often a [[Christian cross|cross]] is drawn in the link between the center node and the bottom node, in order to symbolize the idea that the Second Person of the Trinity entered into the world (or that "The Word was made flesh", as is stated in a Latin annotation on the diagram included in [[Matthew Paris|Matthew Paris']] {{Lang|la|Chronica Majora}} which quotes from the [[Vulgate]] of [[Gospel of John|John]] verse 1:14). When this form of the Shield of the Trinity diagram with one vertex down is used after the 13th century, the Son is much more often placed in the top right node, and the Holy Spirit in the bottom node (as shown in the illustrations above).

The diagram below shows the earliest and most recent major variants of the Shield of the Trinity diagram: On the left, the form attested in various manuscripts c. 1208–1260 AD, and on the right the form popularized among some English-speaking Protestants in recent years by [[Paul P. Enns]]' 1989 book ''The Moody Handbook of Theology'' and H. Wayne House's 1992 book ''Charts of Christian Theology and Doctrine''. Note that in the 13th-century manuscripts, the cross is often drawn as a detailed artistic illumination of Christ on the cross, which is not attempted here.

[[Image:Shield-Trinity-Scutum-Fidei-earliest-and-latest-major-variants.svg|center|thumb|550px|The earliest and most recent major variations of the Shield of the Trinity diagram]]

A few authors of 20th-century books on Christian symbolism (such as Edward N. West in ''Outward Signs: The Language of Christian Symbolism'', 1989) have been of the opinion that the form of the diagram with one vertex down and the captions {{Lang|la|PATER}} and {{Lang|la|FILIUS}} in the two top nodes is more appropriate for Western Christianity with its [[filioque clause|Filioque]]. The form of the diagram with one vertex up represents more closely the doctrine of the Trinity in Eastern Christianity (without the Filioque)—though this hyper-refined interpretation does not agree with 13th-century usage, nor with the use of versions of the diagram with one vertex up by modern Catholics and Protestants.

==Links to depictions of the Shield of the Trinity diagram==
{{Commons category|Shield of the Trinity}}
[[Image:Harleian Ms2169 St Mihell arms colorized.gif|thumb|262px|Arms attributed to St. Michael in the 15th century]]
[[Image:Wernigeroder Wappenbuch 010.jpg|thumb|262px|A full "coat of arms of God" in the [[Wernigerode Armorial]], Southern Germany, c.&nbsp;1490, with blue shield color, instead of the red used for the coat of arms of God in England]]
[[Image:Trinity triangle (Shield of Trinity diagram) 1896.jpg|thumb|262px|Triangular form of the diagram with one vertex up, as found in an 1896 book]]
[[Image:Trinidad-Anglican-Episcopal-Coat-of-Arms.svg|thumb|262px|The modern coat of arms of the [[Anglican Diocese of Trinidad and Tobago|Anglican diocese of Trinidad]]]]
[[Image:Trinity-Parish-Jersey-Coat-of-Arms.svg|thumb|262px|Coat of arms of [[Trinity, Jersey|Trinity Parish, Jersey]], [[Channel Islands]]]]

===13th-century manuscripts===
*[[:Image:PetrusPictaviensis CottonFaustinaBVII-folio42v ScutumFidei early13thc.jpg|C. 1208&ndash;1216 manuscript of ''Compendium Historiae in Genealogia Christi'' by Peter of Poitiers (Petrus Pictavensis)]] &mdash; [[Cotton Faustina]] B. VII folio 42v
*[[:Image:Grosseteste-trinity-diagram.jpg|C. 1230 manuscript of Robert Grosseteste's writings]] &mdash; Durham Cathedral manuscript A.III.12, f. 14v
*[[:Image:Trinity knight shield.jpg|C. 1255&ndash;1265 manuscript of ''Summa Vitiorum'' or "A Treatise on the Vices" by William Peraldus]] &mdash; Harley 3244 folios 27&ndash;28
*The diagrams in Matthew Paris' ''Chronica Majora'' and the De Quincy Apocalypse (Lambeth palace ms. 209, folio 53r) are not online, but are shown in the Michael Evans journal article. A full-page color reproduction of the Lambeth Apocalypse illustration is on page 48 of the Rodney Dennys book.

===15th- or 16th-century manuscripts and books===
*[[:File:Jerome-of-Prague Scutum-fidei-Christianae 15thc.png|"Scutum fidei Christianae"]] diagram of [[Jerome of Prague]]
*[[:File:Christian iconography; or, The history of Christian art in the middle ages (1851) (14579287817).jpg|Redrawn version of illustration]] from a [[Book of Hours]] printed by Simon Vostre in Paris in 1524 (also reproduced in vol. 2 of [[Adolphe Napoleon Didron|Didron]]'s 1843 ''Christian Iconography'').
*[http://www.heraldsnet.org/saitou/parker/Jpglosst.htm#Trinity A redrawn version of the arms of the monastery of Christ Church, London] can be seen as part of the on-line version of the 1894 book ''A Glossary of Terms Used in Heraldry'' by James Parker.

===15th- or 16th-century church decorations===
*[[:Image:Trinity by Jeronimo Cosida.jpg|Depiction by 16th-century Spanish artist Jerónimo Cosida]]
*[http://www.norfolkchurches.co.uk/salle/salle.htm Stained-glass window] at [[Salle, Norfolk#St Peter and St Paul's Church|St. Peter and St. Paul]], Salle, Norfolk, England
*[http://www.suffolkchurches.co.uk/nacton.html Font] at [[St Martin's Church, Nacton|St. Martin]], Nacton, Suffolk, England
*[https://www.flickr.com/photos/erichardyuk/5022618486/in/photostream/ Carved baptismal font without text] at [[Church of St Michael the Archangel, Framlingham|St Michael's Church]], Framlingham
*[http://www.suffolkchurches.co.uk/fressingfield.htm Stained glass window] at [[Fressingfield#History|St. Peter and St. Paul]], Fressingfield, Suffolk, England (shows only the "positive" parts of the diagram, as discussed above)
<!-- *http://www.henham.org/st_mary%27s_tour.htm St. Mary , Henham, Essex, England-->
*[http://www.suffolkchurches.co.uk/butley.html Font] at [[Butley, Suffolk|St. John the Baptist]], Butley, Suffolk, England
*[http://www.suffolkchurches.co.uk/Blythburgh.htm Inscription] at [[Holy Trinity Church, Blythburgh|Holy Trinity]], Blythburgh, Suffolk, England
*[https://www.flickr.com/photos/barryslemmings/1599308684 Textless carving] at All Saints, Wighton, Norfolk, England
*Photographs of stained-glass windows on Flickr:
**[https://www.flickr.com/photos/norfolkodyssey/4514165949 St. Peter and St. Paul, Salle, Norfolk]
***[https://www.flickr.com/photos/22274117@N08/3666302654/ (alternate photo)]
**[https://www.flickr.com/photos/paullew/527598045/ All Saints' church, Cambridge]
**[https://www.flickr.com/photos/84265607@N00/645388687 Allington, Lincolnshire]
**[https://www.flickr.com/photos/norfolkodyssey/457559450/ St Peter Mancroft, Norwich]
**[https://www.flickr.com/photos/davewebster14/3611973292/ Holy Cross Church, Gilling East, Yorkshire]
**[https://www.flickr.com/photos/22274117@N08/3016273381/ St. Andrew's Church, Greystoke Cumbria]
**[https://www.flickr.com/photos/norfolkodyssey/248348224/ Sedgeford, Norfolk]
**[https://www.flickr.com/photos/norfolkodyssey/7157463845/ Holy Trinity Church, Long Melford, Suffolk]

===Some modern church decorations===
*[[:File:Scutum Fidei on Holy Trinity pulpit - geograph.org.uk - 1061634.jpg|Holy Trinity church, Bottisham, Cambridgeshire]] (pulpit decoration, shield-shaped diagram on red shield)
*[[:File:St Mary, Sedgeford, Norfolk - Window - geograph.org.uk - 1701329.jpg|St Mary, Sedgeford, Norfolk]] (stained glass window)
*[[:File:Sainte-Trinité de l'église Saint-Maurice-des-Champs (Lille).jpg|Saint-Maurice-des-Champs, Lille. France]] (floor inlay)
*[[:File:ScutumFidei.jpg|Grace Episcopal Church, Decorah, Iowa]] (stained glass window)
*[[:File:Saint Brigid Church (Dublin, OH) - Pastoral Center, stained glass, Trinitarian window.jpg|Saint Brigid Church, Dublin, Ohio]] (stained glass window)
*[[:File:St Peter's church - stained glass window - geograph.org.uk - 488217.jpg|St Peter's, Strumpshaw, Norfolk]] (stained glass window)
*[[:File:St Swithin's church - stained glass - geograph.org.uk - 893546.jpg|St Swithin's, Bintree, Norfolk]] (stained glass window)
*[[:File:ChancelWindowTrinity.jpg|Holy Trinity Church, Leicester]] (stained glass window)
*[[:File:Holy Trinity, Hurstpierpoint, Sussex - Porch roof - geograph.org.uk - 1504119.jpg|Holy Trinity, Hurstpierpoint, Sussex]] (ceiling decoration)
*[[:File:Dublin Christ Church cathedral Shield of Trinity boss.jpg|Christ Church cathedral, Dublin]] (ceiling boss)
*[[:File:Ornate ceiling at St Mary, Bromfield - geograph.org.uk - 1443154.jpg|St Mary the Virgin, Bromfield, Shropshire]] (ceiling, one of the few 17th-century uses of the diagram, without nodes)
*[[:File:Shield of Trinity Aveling 1891.png|Design in 1891 book]]
*[[:File:Wooden Lectern (United Methodist Church of the Saviour).jpg|Church of the Saviour (United Methodist), Cleveland Heights, Ohio]] ([[lectern]] with diagram engraved in its center)
*[https://www.flickr.com/photos/davewebster14/3733039646/ Circular diagram on stained-glass window] &mdash; St Oswald's, Sowerby, North Yorkshire
*[https://www.flickr.com/photos/norfolkodyssey/2777030991/ Embroidered church decoration (with decorative outer "Sanctus" circle)] &mdash; Mary Magdalene, Lincoln
*[https://www.flickr.com/photos/norfolkodyssey/518113393/ Stained glass window with trefoil nodes] &mdash; [[St Andrew's Church, Wissett]], Suffolk
*[https://www.flickr.com/photos/davewebster14/5716542099/ Stained-glass window] &mdash; St Andrew, Newcastle
*[https://www.flickr.com/photos/davewebster14/5716371113/  Stained-glass window] &mdash; St Andrew, Newcastle
*[https://www.flickr.com/photos/davewebster14/4809687299/  Stained-glass window] &mdash; [[Holy Trinity Church, Brathay|Holy Trinity]], Brathay, Cumbria
*[https://www.flickr.com/photos/41007762@N00/6322493806 Stained-glass window] &mdash; [[Longstanton#History|All Saints]], Longstanton, Cambridge
*[https://www.flickr.com/photos/8767316@N08/5829989464 Stained-glass window] &mdash; [[Waltham Abbey Church|Waltham Abbey]]
*[http://www.messiahlutheransterling.org/symbol17.asp Stained glass window] of Shield of Trinity diagram as symbol of the [[Athanasian Creed]] &mdash; Messiah Evangelical Lutheran Church, Sterling, Illinois
*[http://ctkpalmcoast.wordpress.com/2009/12/11/building-in-their-footsteps/ Floor decoration] &mdash; Our Savior's Lutheran Church in Port Orange, Florida (for artist's draft of design, see [https://www.flickr.com/photos/40064063@N00/2252924666 here])
*[http://rustbeltvoice.blogspot.com/2011/01/holy-trinity-avon-1833.html  Stained glass window] of diagram in circular form &mdash; Holy Trinity, Avon, Ohio
*[http://faith.nd.edu/s/1210/images/gid609/editor/saint_of_the_day/05may/trinity/trinity_small.jpg Stone bas-relief] on the chapel wall of [[Howard Hall (University of Notre Dame)|Howard Hall]].<ref>{{Cite web|title=Feast of the Holy Trinity|url=http://faith.nd.edu/s/1210/faith/interior.aspx?sid=1210&gid=609&pgid=25025|access-date=2021-12-22|website=faith.nd.edu}}</ref>

==References==
{{portal|Christianity}}

===Footnotes===
{{Reflist}}

===General references===
* "The Heraldic Imagination" by [[Rodney Dennys]] (1975). ''(Good historic and heraldic references)''
*"An Illustrated Fragment of Peraldus's ''Summa'' of Vice: Harleian MS 3244" by Michael Evans in ''Journal of the Warburg and Courtauld Institutes'', vol. 45 (1982), pp.&nbsp;14–68. {{JSTOR|750966}} ''(Contains descriptions and photos of most known surviving 13th-century diagrams, including experimental attempts to use the basic structure of the diagram for other purposes)''
* "Church Symbolism: An Explanation of the more Important Symbols of the Old and New Testament, the Primitive, the Mediaeval and the Modern Church" by Frederick Roth Webber (2nd. edition, 1938). {{OCLC|236708}} ''(Convenient overview from the point of view of Christian symbolism; also, the earliest attestation of the exact phrase "Shield of the Trinity" that I can find)''
* "Handbook of Christian Symbolism" by William James Audsley and [[George Ashdown Audsley]] (1865). ''(Probably the earliest significant source for the 19th-century revival of use)''

{{Christian theology|state=uncollapsed}}
{{Theology}}

{{DEFAULTSORT:Shield Of The Trinity}}
[[Category:Christian symbols]]
[[Category:Trinitarianism]]
[[Category:Heraldry]]
[[Category:Christianity in the Middle Ages]]
[[Category:Nature of Jesus Christ]]