TR: cepher → biblion (Book/Scroll)¶

The Chain¶

Hebrew OT              LXX (Greek OT)           Greek NT
───────────            ───────────────           ────────
סֵפֶר (cepher)     →   βιβλίον (biblion)     →   βιβλίον (biblion)
H5612, 174v in OT      LXX co-occ: 142x          28v in NT
"book, scroll,          PMI score: 34.56           "book, scroll,
 letter, document"                                  bill, writing"

OT Usage (Hebrew)¶

Strong's	Word	Occurrences	Primary Meaning
H5612	סֵפֶר (cepher)	174v	book, scroll, letter, legal document, register

Key OT passages: - Gen 5:1 — "This is the book of the generations of Adam" (genealogical record) - Deu 17:18 — "he shall write him a copy of this law in a book" (authoritative Torah scroll) - 2Ki 22:8 — "I have found the book of the law in the house of the LORD" (Josiah's reform) - Jer 36:2 — "Take thee a roll of a book, and write therein all the words" (prophetic scroll) - Dan 12:1 — "every one that shall be found written in the book" (divine register)

Library: H5612-cepher.md

LXX Bridge¶

Hebrew	Greek Translation	Co-occ	Notes
cepher (H5612)	βιβλίον (G975)	142x	Primary equivalent — near-total coverage
cepher (H5612)	βίβλος (G976)	9x	Alternate for major works
cepher (H5612)	ἀποστάσιον (G647)	4x	Specialized: "bill of divorcement"

Reverse bridge — what Hebrew words does βιβλίον also render?

Hebrew Source	Strong's	Co-occ	Score
סֵפֶר (cepher)	H5612	142	34.56
כָּתַב (kathab)	H3789	99	28.35
יֶתֶר (yether)	H3499	40	22.54
דָּבָר (dabar)	H1697	75	13.89
תּוֹרָה (towrah)	H8451	21	12.05

H5612 cepher is the dominant source, but βιβλίον also picks up occurrences where H3789 kathab ("write") appears in "written in the book" phrases — the LXX renders the whole phrase, not just the noun.

Semantic shift in translation: Minimal. Both cepher and biblion cover the same range: scroll, book, letter, legal document. The Greek diminutive suffix (-ίον) carries no diminutive force in Koine usage — biblion is semantically equivalent to biblos in most contexts.

NT Usage (Greek)¶

Strong's	Word	Occurrences	Primary Meaning
G975	βιβλίον (biblion)	28v	book, scroll, bill, writing
G976	βίβλος (biblos)	10v	book (papyrus plant → written work)
G974	βιβλαρίδιον (bibliaridion)	4v	little scroll (Rev 10 only)

Key NT passages: - Mat 19:7 — "a writing (biblion) of divorcement" (legal document — inherits Deu 24:1 sepher usage) - Luk 4:17 — "the book (biblion) of the prophet Esaias" (prophetic scroll — synagogue reading) - Rev 5:1 — "a book (biblion) written within and on the backside, sealed with seven seals" (sealed prophetic scroll) - Rev 20:12 — "the books (biblia) were opened: and another book (biblion) was opened, which is the book of life" (divine register)

Library: G975-biblion.md

Direct OT→NT Quotations¶

NT Verse	Quotes OT	Shared Word	Significance
Mat 19:7 / Mar 10:4	Deu 24:1	sepher → biblion	"bill of divorcement" — legal-document sense preserved
Heb 9:19	Exo 24:7	sepher → biblion	"the book" of the covenant — authoritative Torah scroll
Heb 10:7	Psa 40:7	sepher → kephalis (G2777)	"in the volume of the book" — LXX uses kephalis here, not biblion
Gal 3:10	Deu 27:26	sepher → biblion	"written in the book of the law" — prophetic-legal authority

Word Families¶

H5612 cepher family (from root s-p-r): - H5608 caphar — to inscribe, enumerate, recount (root verb) - H5609 cephar — Aramaic: a book - H5610 cephar — census, numbering - H5613 capher — Aramaic: scribe

G975 biblion family: - G976 βίβλος (biblos) — papyrus plant → book - G974 βιβλαρίδιον (bibliaridion) — little scroll (double diminutive)

Continuity and Shifts¶

What stays the same across testaments: - The full semantic range transfers: scroll, legal document, letter, divine register, authoritative religious text - The "book of the law" formula (sepher hattowrah → to biblion tou nomou) carries intact from Deuteronomy through the NT - The "book of life" / divine register concept bridges from Exo 32:32 and Psa 69:28 directly into Rev 3:5, 20:12

What shifts: - The OT formulaic "written in the book of the chronicles of the kings" (41x in 2 Kings alone) has no NT counterpart — this genre of royal annals citation ends with the Hebrew monarchy - The letter/correspondence sense (24x in OT) narrows in the NT, where ἐπιστολή (epistole) takes over as the standard word for letters/epistles - In Revelation, biblion acquires an intensified apocalyptic-eschatological weight: the sealed seven-sealed scroll (Rev 5–6) and the book of life (Rev 20:12) concentrate the "divine register" and "sealed prophetic scroll" categories from the OT into a climactic NT framework