# G3439 - monogenes **Strong's:** [G3439](https://www.blueletterbible.org/lexicon/g3439/) · BLB lookup **Pronunciation:** mon-og-en-ace' **Part of speech:** adjective **Root:** μόνος (*monos*, "only") + γένος (*genos*, "kind / class"), etymologically "only-of-its-kind" rather than strictly "only-begotten" **NT occurrences:** 9 ## Semantic range (Thayer / BDAG) 1. **Single of its kind, only, unique**, the lexically primary sense; "one and only" of its category. 2. **Of human only-children**, used of an only son or only daughter in relation to parents. 3. **Of Christ, the unique divine Son**, in the five Johannine instances + [Hebrews 11:17](/codex/hebrews-11-17/) (of Isaac), the term carries unique theological weight. ## Theological force, the "begotten" controversy Latin Vulgate rendered *monogenēs* as *unigenitus* ("only-begotten"), which is morphologically loose but came to dominate Western theology and the Nicene Creed (*genitum, non factum*: "begotten, not made"). The Greek word's etymology, however, is more accurately: - *monos* + *genos* ("kind / class") → "one-of-a-kind, unique" - not *monos* + *gennaō* ("to beget") → "only-begotten" Modern lexicography (BDAG, Moody Smith, Dale Moody's classic 1953 *JBL* article) generally favors **"unique" / "one and only"** as the lexical primary, with "only-begotten" preserved as a theological gloss reflecting the broader doctrine of the Son's eternal generation rather than a direct word-meaning. This lexical correction does not undermine Trinitarian theology. The doctrine of eternal generation is grounded in the broader scriptural witness ([Psalm 2:7](/codex/psalms-2-7/); [John 5:26](/codex/john-5-26/); [Hebrews 1:5](/codex/hebrews-1-5/)), not solely in *monogenēs*. The translation choice changes: - "only-begotten" (KJV, NASB95), preserves Nicene theological vocabulary; risks suggesting derivation in time. - "one and only" / "only" (NIV, ESV), preserves lexical accuracy; risks losing the connection to eternal generation. - "unique" (some modern translations), fully lexical; sacrifices doctrinal echo. NASB95 retains "only begotten", preserving the historic Nicene voice. ## The [Hebrews 11:17](/codex/hebrews-11-17/) datum A frequently-overlooked datum: [Hebrews 11:17](/codex/hebrews-11-17/) calls Isaac Abraham's *monogenēs* (*τὸν μονογενῆ προσέφερεν*, "he was offering up his only-begotten son"). But Isaac was **not** Abraham's only biological son, Ishmael was older and biological, and Abraham later had six more sons by Keturah ([Genesis 25:1-2](/codex/genesis-25-1-2/)). So *monogenēs* there cannot mean "only-born child of." It must mean **"unique," "one-of-a-kind"**, the *son of promise*, the irreplaceable covenant child. This is the strongest single argument that *monogenēs* in Christological usage means "unique Son of God" rather than "only-procreated Son." ## Notable verses ### Of Christ - **[John 1.14](/codex/john-1-14/)**, "the glory of the only-begotten (*monogenous*) from the Father, full of grace and truth" - **[John 1.18](/codex/john-1-18/)**, "the only-begotten God (*monogenēs theos*)", the strongest deity reading; Codex Sinaiticus and oldest manuscripts read *monogenēs theos*, not *monogenēs huios* - **[John 3.16](/codex/john-3-16/)**, "He gave His only-begotten (*monogenē*) Son" - **[John 3:18](/codex/john-3-18/)**, "has not believed in the name of the only-begotten Son of God" - **[1 John 4:9](/codex/1-john-4-9/)**, "God has sent His only-begotten Son into the world" ### Of human only-children (the comparison set that disambiguates Christ's usage) - **[Luke 7:12](/codex/luke-7-12/)**, the widow of Nain's *monogenēs* son - **[Luke 8:42](/codex/luke-8-42/)**, Jairus's *monogenēs* daughter (~12 years old) - **[Luke 9:38](/codex/luke-9-38/)**, the demoniac boy: "Teacher, I beg You to look at my son, for he is my *monogenēs*" ### Of Isaac (the lexicographically critical datum) - **[Hebrews 11:17](/codex/hebrews-11-17/)**, "he who had received the promises was offering up his *monogenēs* son", Isaac, not Abraham's only biological son, but the *unique* covenant son ## Patristic / scholarly note The Nicene Creed (AD 325, 381) reads *τὸν Υἱὸν τοῦ Θεοῦ τὸν μονογενῆ, τὸν ἐκ τοῦ Πατρὸς γεννηθέντα πρὸ πάντων τῶν αἰώνων*, "the only-begotten Son of God, begotten from the Father before all ages." The creed deliberately distinguishes "begotten" (*gennēthenta*) from "made" (*poiēthenta*) to refute Arius's claim that the Son was a created being. The patristic doctrine of *eternal generation* answers two questions at once: (a) the Son is truly God (against Arianism, by being from the Father's own being); (b) the Son is personally distinct from the Father (against modalism, by being eternally generated, not identical). Athanasius (*Discourses Against the Arians* II.59ff, c. AD 358) develops the eternal-generation reading of *monogenēs* extensively. Augustine (*De Trinitate* IV.20.27) reinforces it. The lexical recovery in modern scholarship (Dale Moody and after) does not overturn the doctrinal substance; it simply locates the doctrine more rigorously across the canonical witness rather than in this single word. ## Verses in this codex _See Obsidian's backlinks pane for every verse page linking here._ ## See also - [G2316 - theos](/codex/g2316-theos/), paired with *monogenēs* in [John 1:18](/codex/john-1-18/) - [G5207 - huios](/codex/g5207-huios/), "Son" - [G3056 - logos](/codex/g3056-logos/), the Word - [G3962 - pater](/codex/g3962-pater/), "Father" - [John 3.16](/codex/john-3-16/), [John 1.14](/codex/john-1-14/), [John 1.18](/codex/john-1-18/), the Christological passages