Executive Summary: Isaiah → Bengali Translation Requirements

Why it matters

Isaiah is the Old Testament’s densest concentration of messianic prophecy and its clearest statement of substitutionary atonement (ch. 53) — the theological anchor for this curriculum. Translating it into Bengali is materially harder than the Romans baseline: it introduces God’s covenant name (YHWH) for the first time in this language package, it carries the Bible’s most extensive idol polemic directly against vocabulary (মূর্তি) that is simultaneously sacred and beloved in Bengal’s dominant Hindu devotional culture, and its cosmology (a linear, once-for-all new creation) sits in direct tension with the cyclical cosmic imagination shared informally across both of Bengali’s major religious communities. Getting this wrong doesn’t just blur a doctrine — in several places (ch. 53’s চূর্ণ/শাস্তি cluster, the সদাপ্রভু/প্রভু distinction, the মূর্তি framing) it risks inverting doctrine or giving unintended offense at scale, across both West Bengal and Bangladesh.

Key findings

• 32 doctrines tracked, spanning all 66 chapters with zero silent omissions (chapters without new content are explicitly marked “reviewed — no new load”); 27 of 32 require mandatory human theologian review (13 Critical + 14 High), versus 4 native-speaker-review and 1 automated-only.
• 91 book-specific theological terms are newly registered for Isaiah (bible_term_registry.json), of which 62 are Critical or High risk (35 Critical + 27 High) — a Critical/High share of roughly 68%, materially higher than the Romans baseline’s proportion, driven by the density of the Servant Songs and the God-name distinction.
• The final translation_memory.json for this curriculum carries 120 total enforced terms — 46 inherited unchanged from the Romans baseline plus 74 new Isaiah-specific entries — the largest single-curriculum term set produced so far in this language package.
• Isaiah 53:1-12 alone contains the highest doctrinal-density term cluster in the whole Bengali Bible-translation project to date: ten Critical-risk terms in twelve verses, including a near-catastrophic proofreading hazard (শাস্তি “chastisement” vs. শান্তি “peace,” a one-letter difference, in the same verse, 53:5).

Risks

• শাস্তি/শান্তি collision (Isaiah 53:5): the single highest copy-editing risk identified in this project; a one-letter error inverts penal-substitution doctrine into an unrelated claim about peace. Mandatory dual-proofreading pass required.
• সদাপ্রভু vs. প্রভু vs. ঈশ্বর: this curriculum introduces, for the first time, the need to distinguish God’s covenant name from his title and from the generic word for God — a distinction the New Testament-only Romans baseline never required. Silent collapsing anywhere across 66 chapters erases a distinction the text relies on continuously.
• মূর্তি (idol): the highest cross-cultural collision term identified in this entire Bengali Bible-translation project — simultaneously the required biblical-polemic word and the ordinary, reverential word for consecrated Hindu devotional images central to Durga Puja and other major festivals. No synonym exists; only mandatory standing translator framing can manage the risk.
• অভিষিক্ত vs. খ্রীষ্ট (Isaiah 45:1 vs. 61:1): a single Hebrew root must be split into two non-interchangeable Bengali renderings so that Cyrus’s instrumental anointing is never confused with the Messianic title reserved for Jesus.
• Cyclical vs. linear cosmology: “new heavens and new earth” (65:17; 66:22) and bodily resurrection (26:19) both collide with the cyclical kalpa/yuga cosmological imagination shared informally across Bengal’s Hindu-majority and, to a lesser degree, Buddhist-influenced populations.
• দাস (Servant) social connotation: risks being heard through the lens of দাসত্ব (historical slavery) rather than the honored covenantal office the Hebrew ebed actually names.

Opportunities

• Isaiah 52:7 and 61:1 are direct, verbatim Old Testament sources for New Testament proof-texts already locked in the Romans baseline (Romans 10:15; Luke 4:18) — this curriculum can inherit those exact renderings, giving Bengali readers a recognizable thread across the whole Bible-study library rather than two disconnected translations of the same idea.
• Isaiah’s messianic material (chs. 7, 9, 11, 42, 49-53, 61) gives this curriculum unusually strong, textually explicit ammunition for the two doctrines most contested by Bengal’s dominant traditions — the deity of Christ (9:6’s “Mighty God”) and his substitutionary death (ch. 53) — stated centuries before the incarnation, which can be pastorally powerful precisely because it is Old Testament, not merely New Testament assertion.
• The abba-equivalent linguistic advantage already identified in the Romans baseline (আব্বা landing naturally for Muslim-background readers) has an Isaiah-specific parallel: Isaiah 61’s Jubilee-release imagery and Isaiah 40’s comfort/consolation language both have warm, immediately resonant equivalents in Bengali devotional vocabulary, if handled with the doctrinal guardrails this package specifies.
• A single, well-constructed standing translator’s introduction to the idol polemic (মূর্তি) can convert this curriculum’s single highest collision risk into a model of pastorally careful cross-religious engagement, reusable by every future Old Testament curriculum in this language package.

Recommended actions

1. Lock the Isaiah 53 atonement-vocabulary cluster first, before any other chapter enters Phase 2 translation: চূর্ণ, শাস্তি, বিদ্ধ, অপরাধ, দোষ, বহন করা, ধার্মিক বলে গণ্য করবেন. Require dual proofreading specifically on 53:5.
2. Add সদাপ্রভু to translation memory as the mandatory, invariant rendering of YHWH and issue the single book-level সদাপ্রভু/প্রভু/ঈশ্বর standing translator’s note before translating any other chapter.
3. Draft and approve the মূর্তি standing introduction (human theologian + native speaker co-authored) before beginning translation of chapters 2, 40-48, or 57.
4. Hard-code an automated keyword check preventing খ্রীষ্ট from appearing anywhere in the Phase 2 output for Isaiah chapter 45.
5. Route all 27 theologian-tier doctrines and all 62 Critical/High terms through the escalation rules fixed in 12_ai_translation_requirements.md, prioritizing chapters 6, 9, 40, 45, 53, and 61 for review sequencing, consistent with 11_doctrine_analysis.md’s stated priority order.
6. Cross-check Isaiah 52:7 and 61:1 against the existing Romans 10:15 / Luke 4:18 Bengali renderings for verbatim consistency before sign-off.