Executive Summary — 1 Peter (English → Japanese)

Why it matters

1 Peter is being added to the japanese Language Package built for Romans. The good news: Japan already has a mature, doctrinally careful Bible translation tradition (Shinkaiyaku 2017) supplying settled vocabulary for most of this letter’s core terms. The hard news: 1 Peter’s distinctive vocabulary — living hope, ransom, royal priesthood, submission, elders, humility, and Christ’s proclamation to imprisoned spirits — collides with Japan’s dominant religious and cultural frameworks (Shinto priestly castes, ancestor-spirit folk culture, Buddhist suffering doctrine, the on-giri reciprocity system, and pre-1945 State Shinto political theology) more densely, and in more places, than Romans did. This letter cannot be translated by vocabulary substitution alone; it requires sustained doctrinal fencing throughout.

Key findings

• 48 of 80 tracked terms (60%) are Critical or High risk (16 Critical, 32 High), requiring mandatory human theologian or native-speaker review before approval — a higher density than the Romans baseline.
• 21 of 29 catalogued doctrines (72%) require human theologian review (6 Critical, 15 High), per doctrine_risk_registry.json; only 3 doctrines are automated-review-only.
• The Church as a Holy and Royal Priesthood (2:4-10) is the single densest collision cluster in the letter: three of its five core phrases (祭司, 聖なる国民, 霊の供え物) each independently collide with living Japanese religious practice or fraught 20th-century political history.
• 1 Peter 3:18-22 (“spirits in prison”) is a uniquely dangerous passage: it is one of the only places where unqualified 霊 is doctrinally correct Japanese, positioned directly beside Japan’s vivid, mainstream ancestral-spirit and ghost culture — and it is independently one of the most exegetically disputed passages in the New Testament. This compounding of interpretive and cultural risk is unmatched elsewhere in either language package.
• The baseline’s single highest-stakes warning — the on-giri (恩・義理) reciprocal-obligation risk flagged Critical for “grace” in Romans — reactivates twice more in 1 Peter (1:18-19’s “ransomed,” 5:5’s “grace to the humble”), making this the most-repeated Critical risk pattern across the whole curriculum.
• Suffering-for-righteousness, this letter’s central pastoral concern, runs structurally opposite to Buddhism’s foundational First Noble Truth (一切皆苦) — a collision so pervasive it recurs across nearly every chapter rather than at one isolated point.

Risks

• Highest-severity risk: “Spirits in prison” (3:18-22) — folk-spirit/ancestor-rescue/purgatory misreading stacked on genuine exegetical ambiguity. Mandated for 100% theologian review with no automated or native-speaker-only path.
• Highest-frequency risk: Suffering vocabulary (苦しみ) appearing across chapters 1, 3, 4, and 5, each occurrence needing active contrast with Buddhist suffering-escape theology rather than a one-time footnote.
• Highest-consequence-if-missed risk: Submission-to-authority passages (2:13-3:7, 5:5) taught apart from 5:3’s anti-domineering safeguard, given Japan’s hierarchical-deference culture and contemporary karōshi-adjacent workplace-abuse concerns — a real-world pastoral harm risk, not merely a translation-quality risk.
• Most politically sensitive risk: “Holy nation” (2:9) reactivating the pre-1945 State Shinto ultranationalist slogan 神国日本, already flagged Critical in the Romans baseline under kingdom_of_god.
• Most pastorally delicate risk: Idolatry teaching (4:3) landing directly on readers’ own living family devotional practice (butsudan, kamidana) rather than a comfortably distant historical category.

Opportunities

• Japan’s established adult-heir succession culture makes “inheritance” (1:4) a workable positive bridge, as it did for “adoption” in the Romans baseline.
• Japan’s Confucian-influenced age/seniority-respect culture gives “elder” (5:1) a genuine, if imperfect, positive cultural bridge requiring only careful qualification rather than wholesale re-explanation.
• Contemporary Japanese stress/mental-health discourse gives “casting your anxiety on him” (5:7) an unusually strong, ready-made pastoral entry point.
• Pure Land Buddhism’s tariki (other-power) structure, already noted as a bridge for “salvation” in the Romans baseline, remains available as a teaching bridge for 1 Peter’s grace-not-works emphasis, provided the same non-equivalence caution is maintained.

Recommended actions

1. Route 1 Peter 3:18-22 through a dedicated, isolated theologian-review workflow with zero automated or native-speaker-only shortcuts, distinct from and stricter than the standard Critical-tier routing.
2. Enforce a standing pairing rule in curriculum design: submission passages (2:13-3:7, 5:5) must never be sequenced, excerpted, or taught without 5:3’s anti-domineering safeguard in the same unit.
3. Require every major suffering-passage lesson (1:6-7, 3:14-17, 4:1, 4:12-19, 5:9-10) to include explicit contrast content against Buddhism’s 一切皆苦 escape-through-detachment structure, not a single first-occurrence footnote.
4. Prioritize theologian review capacity toward chapters 1–3, which together contain four of the letter’s six Critical-tier doctrines.
5. Brief all Phase 2 translators and reviewers on the letter’s unique 霊/聖霊 disambiguation requirement (3:18, 3:19, 4:6) before any segment processing begins, given its unprecedented (within this Language Package) correct use of unqualified 霊.