Quod Ubique — Methodological Protocol

The Vincentian Canon as Primary Test

Vincent of Lérins articulated the criterion in his Commonitorium (AD 434): quod ubique, quod semper, quod ab omnibus creditum est — what has been believed everywhere, always, and by all. This is the primary inclusion test for Layer 1 of this corpus.

The Canon is not applied naively. “Everywhere” does not mean every village church; it means across the major geographic and cultural streams of the tradition. “Always” does not mean from Genesis forward; it means across the centuries of the Church’s existence, from the apostolic period through the present. “By all” does not mean unanimity of every individual; it means the received consensus of the tradition’s authoritative teaching organs — councils, confessions, catechisms, liturgies.

The Canon does not stand alone. It is complemented by the Rule of Faith (regula fidei), the baptismal summary of the apostolic preaching described by Irenaeus (Against Heresies 1.10.1), Tertullian (De Praescriptione Haereticorum 13), and Hippolytus (Apostolic Tradition). The Rule of Faith is the oldest witness to the shape of Christian doctrine: one God, Father Almighty; one Lord Jesus Christ, incarnate, crucified, risen; one Holy Spirit, active in the Church. The ecumenical creeds are expansions of this Rule. The Vincentian Canon tests whether a doctrine belongs to this stream.

The Triple Test for Layer 1 Inclusion

A doctrine enters Layer 1 — the Dogmatic Core — if and only if all three of the following conditions hold:

1. Scriptural Warrant

The doctrine has clear and direct biblical support that every branch recognizes as relevant. This does not require identical exegesis; it requires that the biblical texts invoked are acknowledged across traditions as bearing on the doctrine in question. A proof-text that only one tradition reads as supporting the claim does not meet this standard.

2. Conciliar/Creedal Anchor

The doctrine is confessed in a creed or council received by all historic branches. The shared conciliar floor is:

Council	Year	Reception
Nicaea I	325	Universal
Constantinople I	381	Universal
Ephesus	431	Universal (except Assyrian Church of the East, partially)
Chalcedon	451	Universal among Chalcedonian churches; Oriental Orthodox dissent on formula but largely agree on substance
Constantinople II	553	Universal among Chalcedonian churches
Constantinople III	681	Universal among Chalcedonian churches

Nicaea II (787) is received by Rome and Orthodoxy but with various qualifications by Protestant traditions. It is supportive evidence but not decisive alone for Layer 1.

3. Tradition-Formulary Attestation

The doctrine is explicitly taught in the authoritative formularies of each named tradition. For a claim to enter Layer 1, attestation must be shown from:

Tradition	Formularies Cited
Roman Catholic	CCC (by paragraph), Denzinger-Hünermann (DH), Trent, Vatican I/II
Eastern Orthodox	Conciliar definitions, Confession of Dositheus (1672), Longer Catechism of Philaret (1823), liturgical texts
Lutheran	Augsburg Confession (AC), Apology of the AC, Small/Large Catechism, Formula of Concord
Reformed	Westminster Confession (WCF), Heidelberg Catechism (HC), Belgic Confession (BC), Canons of Dort (CD)
Anglican	39 Articles, Book of Common Prayer (1662/1979), Chicago-Lambeth Quadrilateral

Methodist/Wesleyan and Oriental Orthodox attestation is noted where available but is not required for Layer 1 inclusion, given that their formularies are less systematically comprehensive.

Source Hierarchy

Sources are cited in this order of authority:

1. Holy Scripture — cited first, always, by book, chapter, and verse (ESV or NKJV for English; original language terms noted where critical)
2. Ecumenical councils — conciliar definitions and canons, by council name and canon/chapter number
3. Patristic consensus — the Fathers cited by name, work, book/chapter/section, and approximate date; Vincentian standard applied (not one Father, but the broad stream)
4. Tradition-specific authoritative formularies — one or more per named tradition (see table above)
5. Modern witnesses — scholarly theologians cited only as illustration or to show living reception, never as doctrinal ground

Doctrinal Ranking Schema

Not all doctrines carry the same weight. This corpus uses a three-tier ranking:

Dogma (Layer 1)

Doctrines defined by ecumenical councils, confessed in the creeds, and received by all historic branches. Denial constitutes heresy — departure from the faith itself. Examples: the Trinity, the Incarnation, the Resurrection.

Doctrine (Layers 2–3)

Teachings widely held and authoritatively taught but not universally received with the same formulation. Denial may constitute serious error within one or more traditions but is not universally treated as heresy. Examples: the mode of Christ’s presence in the Eucharist, the mechanics of justification.

Opinion (Theologoumenon)

Theological positions held by respected teachers within a tradition but not binding on the community as a whole. Examples: supralapsarianism vs. infralapsarianism within Reformed theology, the age of the earth.

The Taxonomy Meta-Disagreement

An honest protocol must acknowledge: Rome, Orthodoxy, and Protestantism do not agree on what counts as dogma or who gets to declare it.

• Rome: Dogma is what the Magisterium (Pope + bishops in communion) has defined de fide — including post-apostolic developments (e.g., Immaculate Conception, Papal Infallibility). Development of doctrine (Newman) is itself a doctrine.
• Eastern Orthodoxy: Dogma is what the ecumenical councils (seven, no more) have defined, as received by the whole Church. There is no single human organ that can unilaterally declare new dogma.
• Magisterial Protestantism: Dogma is what Scripture teaches, with the ecumenical creeds serving as faithful summaries. No council or church officer can bind the conscience beyond Scripture. Sola Scriptura is the norming norm (norma normans); creeds and confessions are normed norms (normae normatae).

This corpus does not resolve this meta-disagreement. It operates at the level where all three approaches converge: doctrines that Scripture teaches, that the councils defined, and that every tradition’s formularies confess. This is the only level at which Layer 1 can honestly operate.

Real vs. Verbal Consensus Protocol

When branches use the same words, the corpus tests for substantive agreement by asking:

1. Application test: Does each branch’s authoritative formulary apply the confession in the same way? (E.g., all confess “Christ is truly present in the Eucharist” — but “truly present” means different things across traditions. This is verbal consensus masking real disagreement → Layer 3 or 4.)

2. Anathema test: Does each branch anathematize the same heresies when this doctrine is denied? (E.g., all anathematize Arianism. This is real consensus.)

3. Liturgical test: Does each branch worship in ways that presuppose the same doctrinal reality? (E.g., all baptize in the Triune Name. This is real consensus enacted in liturgy.)

Scoring:

• All three tests pass → Real consensus → Layer 1
• Two tests pass → Probable real consensus, held with note → Layer 1 with qualification
• One or zero → Verbal consensus masking disagreement → Layer 3 or 4

Hermeneutical Principles

This corpus reads the tradition through three lenses:

1. Christological: All doctrine radiates from the person and work of Christ. The Trinity is confessed because Christ revealed the Father and sent the Spirit. The Church exists because Christ founded it. Scripture is authoritative because Christ affirmed it and the Spirit inspired it.

2. Ecclesial: Doctrine is not the possession of individuals but of the community. The Fathers theologized within the worshipping Church. Confessions were written by assemblies, not lone scholars. This corpus respects that context even as it uses a non-ecclesial tool.

3. Doxological: The end of doctrine is worship. The Nicene Creed was composed for the liturgy. The Gloria Patri is a Trinitarian confession sung, not argued. Formulations that cannot be prayed have failed.

Rhetorical Principles

1. Charity: Present each tradition in its best light. Quote a tradition’s own best theologians, not its critics. When a tradition must be shown to have erred, use the tradition’s own internal critics first.

2. Precision: Avoid vague ecumenical language (“all Christians believe in love”). Name doctrines specifically. Cite sources specifically. Say what each tradition actually confesses, not what we wish it confessed.

3. Named sources: Every non-trivial claim carries a citation. “The Fathers taught X” is never left un-cited. At minimum: author, work, and section. Dates are approximate (e.g., “c. 375”) where exact dates are uncertain.

4. Doxological register: The corpus confesses, not merely discusses. Scripture is quoted as Scripture — the Word of God, not merely a historical text. Christ is Lord, not a subject of study.

The Tool’s Confessional Limits

This corpus was assembled with the aid of a large language model. The tool:

• Has no confessional standing and claims none
• Cannot adjudicate doctrinal disputes — only map them
• May err in citation (patristic quotes are the highest-risk area)
• Offers its work as a draft for the community’s discernment, not as a finished product

Uncertainty marker convention: Where a citation or consensus claim has not been independently verified, the text includes [∗] as an inline marker. These markers are invitations for human scholars to verify, correct, or confirm. The corpus improves as these markers are resolved.

Citation Convention

Format: Author, Work, Book.Chapter.Section (or paragraph number), approximate date.

Examples:

• Athanasius, De Incarnatione 54.3, c. 335
• Thomas Aquinas, Summa Theologiae I, q.1, a.1, c. 1265–1274
• CCC §232
• WCF 2.1
• HC Q&A 1
• AC Article IV

Scripture citations use standard book abbreviations with chapter:verse notation. English text follows ESV unless otherwise noted.