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S7 reasoning: Scripture and tradition

Reasoning steps: Scripture and tradition

Verdicts: S7 · Scripture and tradition. Shared notes and post-750 development: scripture-and-tradition.

S07.1 (was scripture-and-tradition/C1): Is Scripture the supreme norm, or co-equal with unwritten tradition?

Step S07.1.1: Scripture

2 Tim 3:15–17: Scripture is θεόπνευστος and makes the man of God ἄρτιος, ‘complete’. 2 Thess 2:15: hold ’the traditions … whether by word or by our letter’; in context this is the apostles’ own teaching, given in person or by letter. Jude 3: the faith ‘once for all delivered’. No text points to a later body of unwritten tradition standing beside Scripture.

Step S07.1.2: Patristic evidence

Irenaeus calls the Scriptures ’the ground and pillar of our faith’ and appeals to the bishops’ succession as a public guard of the same tradition. Athanasius: the canonical books are ‘fountains of salvation’; ‘Let no man add to these’. Cyril: salvation rests ‘on demonstration of the Holy Scriptures’. Basil (T3) gives unwritten practices ’the same force’, but his examples are liturgical customs, not new doctrines. Vincent: the canon ‘is complete, and sufficient of itself’, yet it is read with the church’s consensus. Sources: irenaeus-sct-s1 · athanasius-sct-s1 · cyril-of-jerusalem-sct-s1 · basil-sct-s1 · vincent-of-lerins-sct-s1.

Step S07.1.3: Weighing decision

Reading A: Scripture and unwritten tradition are two co-equal sources of doctrine. Reading B: Scripture alone, with no interpretive tradition. Reading C: Scripture is the supreme and sufficient norm of doctrine, read within the apostolic rule of faith, with unwritten liturgical customs honoured. C is chosen. A rests mainly on Basil (T3), and his examples are practices. B ignores the role Irenaeus and Vincent give the rule of faith and the churches.

  • Confidence: Medium–high.

Step S07.1.4: Source-proximity weighing

  • Scripture (benchmark): 2 Tim 3:16–17 (θεόπνευστος, ἄρτιος) makes Scripture sufficient for teaching. 2 Thess 2:15 refers to apostolic teaching delivered in person or by letter. No text sets up a later unwritten tradition as equal to Scripture. (Scripture confidence: medium-high)
  • Assessment: Earliest support is T2 (Irenaeus) for C. The co-equal ’two sources’ formula (Trent IV, ’equal affection of piety’) and the Orthodox ’not of inferior authority’ (Dositheus 2) rely on T3 Basil and later, and lack biblical support. Lutheran and Reformed rejection of any interpretive rule goes beyond Irenaeus and Vincent.

S07.2 (was scripture-and-tradition/C2): The Old Testament canon

Step S07.2.1: Scripture

Luke 24:44 (’the Law of Moses and the Prophets and the Psalms’) and Rom 3:2 (’the oracles of God’ entrusted to the Jews) point to the Jewish Scriptures. The NT nowhere quotes a deuterocanonical book with a formula like ‘it is written’ (Jude 14 quotes 1 Enoch as prophecy, not as Scripture by formula).

Step S07.2.2: Patristic evidence

Athanasius and Cyril (T3) give the 22-book Hebrew canon and set other books apart as ‘read’ for instruction. Augustine (T3) and the African councils include Tobit, Judith, Maccabees, Wisdom and Sirach. Sources: athanasius-sct-s3 · cyril-of-jerusalem-sct-s2 · augustine-sct-s1.

Step S07.2.3: Weighing decision

The patristic witness is split, East (Athanasius, Cyril; Jerome) against West (Augustine, Carthage). Neither side has a T1–T2 list in our verified sources. The two-tier arrangement of Athanasius (canon + books read) is the best-attested Eastern position.

  • Confidence: Medium.

Step S07.2.4: Source-proximity weighing

  • Scripture (benchmark): Luke 24:44 and Rom 3:2 point to the Jewish canon; the NT cites no deuterocanonical book by Scripture formula. The evidence is indirect. (Scripture confidence: low-medium)
  • Assessment: All verified lists are T3. Scripture’s indirect evidence leans toward the Hebrew canon. The Ethiopian wider canon (1 Enoch, Jubilees) lacks both early and biblical support as canon.

S07.3 (was scripture-and-tradition/C3): Who interprets Scripture: rule of faith, councils, an infallible office?

Step S07.3.1: Scripture

Acts 15: apostles and elders decide together, and the decision is received by the churches. 1 Tim 3:15: the church is ‘pillar and ground of the truth’. Acts 17:11: the Bereans test even apostolic preaching by the Scriptures. Gal 1:8: even an apostle or an angel is to be judged by the gospel.

Step S07.3.2: Patristic evidence

Irenaeus: in a dispute, have recourse to ’the most ancient Churches’; succession guards the tradition. Tertullian: faith ‘descended from the Apostles, Through Apostolic Churches’. Vincent: hold what was believed ’everywhere, always, by all’. Sources: irenaeus-sct-s3 · tertullian-sct-s1 · vincent-of-lerins-sct-s2.

Step S07.3.3: Weighing decision

Reading A: a single infallible office decides. Reading B: each believer alone. Reading C: Scripture is interpreted within the rule of faith kept by the apostolic churches and their councils, with no single infallible office. C is chosen. The papal-infallibility claim is not in these texts (see the forthcoming church-authority category). Acts 17:11 and Gal 1:8 keep church teaching testable.

  • Confidence: Medium.

Step S07.3.4: Source-proximity weighing

  • Scripture (benchmark): The church has real teaching authority (Acts 15; 1 Tim 3:15), but it remains subordinate to the gospel and testable by Scripture (Acts 17:11; Gal 1:8). (Scripture confidence: medium)
  • Assessment: T2 (Irenaeus, Tertullian) supports C. Vatican I’s papal infallibility (1870) lacks T1–T3 and biblical support as a defined dogma. Purely congregational interpretation without councils (Anabaptist; partly the Baptists) lacks T2 support.