3751. osphus
Lexical Summary
osphus: Loins, waist

Original Word: ὀσφύς
Part of Speech: Noun, Feminine
Transliteration: osphus
Pronunciation: os-foos'
Phonetic Spelling: (os-foos')
KJV: loin
NASB: loins, waist
Word Origin: [of uncertain affinity]

1. the loin (externally), i.e. the hip
2. (internally, by extension) procreative power

Strong's Exhaustive Concordance
loin.

Of uncertain affinity; the loin (externally), i.e. The hip; internally (by extension) procreative power -- loin.

HELPS Word-studies

3751 osphýs – properly, the hip (reproductive area); used figuratively in 1 Pet 1:13 of the "reproductive" (creative) capacity of the renewed mind (cf. Ro 12:1-3).

[3751 (osphýs) is "the seat of generative power (Heb 7:5,10, Abbott-Smith). "To smite the loins" referred to a fatal blow – "forever ending" anything that would (could) come from the slain.]

NAS Exhaustive Concordance
Word Origin
a prim. word
Definition
the loin
NASB Translation
descendants* (1), descended* (1), loins (2), waist (2).

Thayer's Greek Lexicon
STRONGS NT 3751: ὀσφύς

ὀσφύς (or ὀσφύς, so R Tr in Ephesians 6:14; G in Matthew 3:4; cf. Chandler §§ 658, 659; Tdf. Proleg., p. 101), ὀσφύος, , from Aeschylus and Herodotus down;

1. the hip (loin), as that part of the body where the ζώνη was worn (the Sept. for מָתְנַיִם): Matthew 3:4; Mark 1:6; hence, περιζωννυσθαι τάς ὀσφύας, to gird, gird about, the loins, Luke 12:35; Ephesians 6:14; and ἀναζωννυσθαι τάς ὀσφύας (to gird up the loins), 1 Peter 1:13; on the meaning of these metaphorical, phrases see ἀναζώννυμι.

2. a loin, the Sept. several times for חֲלָצַיִם, the (two) loins, where the Hebrews thought the generative power (semen) resided (?); hence, καρπός τῆς ὀσφύος, fruit of the loins, offspring, Acts 2:30 (see καρπός, 1 at the end); ἐξέρχεσθαι ἐκ τῆς ὀσφύος τίνος, to come forth out of one's loins i. e. derive one's origin or descent from one, Hebrews 7:5 (see ἐξέρχομαι, 2 b.); ἔτι ἐν τῇ ὀσφύϊ τίνος, to be yet in the loins of someone (an ancestor), Hebrews 7:10.

Topical Lexicon
Overview of the Term

The Greek noun appearing eight times in the New Testament designates the mid-section of the body, yet Scripture consistently expands the idea beyond anatomy. In biblical thought this region represents strength, generative power, readiness for movement, and the seat of descendants yet unborn. Each occurrence either preserves the literal sense of the human waist or employs it figuratively to emphasize preparedness, covenant lineage, or spiritual integrity.

Literal Attire and Cultural Context

In Matthew 3:4 and Mark 1:6 the word describes the place where John the Baptist wore “a leather belt around his waist,” a striking visual that linked him to Elijah (2 Kings 1:8) and underscored prophetic austerity. A tightened belt allowed freedom of movement and symbolized single-minded devotion, contrasting with luxurious dress (Luke 7:25). Thus, even the strictly literal instances carry moral weight: the simple, girded servant stands ready for the Lord’s purposes.

Symbol of Readiness and Service

Luke 12:35 presents the master’s command: “Be dressed for service and keep your lamps burning”. The girded waist marks a vigilant servant awaiting the Lord’s return. 1 Peter 1:13 transfers the same image to the inner life: “Therefore gird up the loins of your mind, be sober, and set your hope fully on the grace to be brought to you at the revelation of Jesus Christ”. Mental looseness must be cinched tight; disciplined thought precedes holy living.

The backdrop is the ancient practice of tucking the long robe into a belt before work or battle. Tucked fabric connoted urgency; a slack robe suggested leisure. Believers are summoned to a continual posture of watchfulness.

Genealogical and Covenantal Significance

Acts 2:30 recalls the oath to David that God would raise up “one of his descendants to sit on his throne” (literally “from the fruit of his loins”). Hebrews 7:5 notes that Levites, though “from the loins of Abraham,” received tithes from their brethren; verse 10 states Levi was “still in the loins of his father when Melchizedek met him.” The term here points to unborn posterity resident within the patriarch. Scripture views ancestry not merely biologically but covenantally: promises given to Abraham encompass those yet un-conceived.

This perspective preserves continuity in the redemptive storyline: the Messiah, prophesied and oath-guaranteed, emerges from the very same “loins” that carried the priestly tribe. Genealogy is therefore theological, binding generations to divine fidelity.

Messianic Lineage and Priestly Implications

Hebrews contrasts two priesthoods. Levi, seminally in Abraham’s body, pays tithes to Melchizedek, establishing the latter’s superiority. Consequently the messianic priest “in the order of Melchizedek” surpasses the Levitical line. The location of Levi “in the loins” underlines corporate identity: what the patriarch does, his seed does. This concept safeguards the writer’s argument that Christ, though from Judah, lawfully supersedes the old priesthood.

Spiritual Warfare and Sanctification

Ephesians 6:14 connects the girded waist to the believer’s armor: “Stand firm then, with the belt of truth buckled around your waist”. The soldier’s belt held the sword and strengthened the core; truth stabilizes the Christian, securing every other piece of armor. The imagery unites mental readiness (1 Peter 1:13), vigilant service (Luke 12:35), and militant steadfastness (Ephesians 6:14), revealing a single biblical motif: covenant servants must cinch themselves with divine reality before they engage the world.

Application to Contemporary Discipleship

1. Cultivate disciplined thinking. The loose, distracted mind cannot remain holy (1 Peter 1:13).
2. Embrace alert service. Expectant readiness for the Lord’s return fuels perseverance (Luke 12:35).
3. Anchor identity in covenant heritage. Believers trace spiritual ancestry to Abraham through Christ, heirs of the same promises (Acts 2:30; Galatians 3:29).
4. Fasten truth securely. Integrity and doctrinal fidelity protect against spiritual assault (Ephesians 6:14).

Summary

Across Gospel narrative, apostolic exhortation, and theological argument, the New Testament employs this term to portray the waist as the locus of preparedness, generational continuity, and inward fortitude. Whether describing a prophet’s rugged belt, servants awaiting their master, or the unseen seed within Abraham, the Spirit uses one physical image to urge believers of every era to stand ready, rooted in truth, and conscious of their place in God’s unfolding covenant plan.

Forms and Transliterations
οσφυας οσφυάς οσφύας ὀσφύας οσφυες οσφύες ὀσφύες οσφυι οσφυϊ οσφύϊ ὀσφύϊ οσφυν οσφύν ὀσφὺν οσφυος οσφύος ὀσφύος οσφύς οσφύων osphuas osphues osphui osphun osphuos osphyas osphýas osphyes osphýes osphýï osphyn osphỳn osphyos osphýos
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Interlinear GreekInterlinear HebrewStrong's NumbersEnglishman's Greek ConcordanceEnglishman's Hebrew ConcordanceParallel Texts
Englishman's Concordance
Matthew 3:4 N-AFS
GRK: περὶ τὴν ὀσφὺν αὐτοῦ ἡ
NAS: around his waist; and his food
KJV: about his loins; and his
INT: about the waist of him

Mark 1:6 N-AFS
GRK: περὶ τὴν ὀσφὺν αὐτοῦ καὶ
NAS: around his waist, and his diet
KJV: about his loins; and he did eat
INT: about the waist of him and

Luke 12:35 N-NFP
GRK: ὑμῶν αἱ ὀσφύες περιεζωσμέναι καὶ
KJV: Let your loins be girded about,
INT: your waist girded about and

Acts 2:30 N-GFS
GRK: καρποῦ τῆς ὀσφύος αὐτοῦ καθίσαι
KJV: of his loins, according to
INT: fruit of the loins of him to sit

Ephesians 6:14 N-AFS
GRK: περιζωσάμενοι τὴν ὀσφὺν ὑμῶν ἐν
NAS: HAVING GIRDED YOUR LOINS WITH TRUTH,
KJV: having your loins girt about with
INT: having fastened about the loins of you with

Hebrews 7:5 N-GFS
GRK: ἐκ τῆς ὀσφύος Ἀβραάμ
KJV: they come out of the loins of Abraham:
INT: out of the loin of Abraham

Hebrews 7:10 N-DFS
GRK: ἐν τῇ ὀσφύϊ τοῦ πατρὸς
NAS: for he was still in the loins of his father
KJV: yet in the loins of his father, when
INT: in the loin of the father

1 Peter 1:13 N-AFP
GRK: ἀναζωσάμενοι τὰς ὀσφύας τῆς διανοίας
KJV: gird up the loins of your
INT: having girded up the waist of the mind

Strong's Greek 3751
8 Occurrences


ὀσφύας — 1 Occ.
ὀσφύες — 1 Occ.
ὀσφύϊ — 1 Occ.
ὀσφὺν — 3 Occ.
ὀσφύος — 2 Occ.

3750
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