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Strong's Concordance
Greek Word Study

Strong's G3431 μοιχεύω (moicheuo)

Moicheuo means “commit adultery” — full meaning, definition, and every linked Bible usage across the indexed canon.

Same number, other testament: Strong's H3431 — yishbach (“Ishbah”) in the Hebrew Bible.

Strong's Number G3431
Language Greek
Linked Usages 20
Books 14

Strong's G3431 Quick Answer

Strong's G3431 μοιχεύω (moicheuo) is a Greek Strong's word-study entry. moicheuo (moy-khyoo'-o) v. 1. to commit adultery [from G3432] It has 20 linked Bible usages across 14 books. Visible English usage signals include commit and adultery. Indexed coverage on this page includes New Testament, Septuagint / Greek Old Testament, and Deuterocanonical / Apocrypha.

Meaning
moicheuo (moy-khyoo'-o) v. 1. to commit adultery [from G3432]
Usage
20 linked usages
Books
14 indexed books
Corpus
New Testament, Septuagint / Greek Old Testament, and Deuterocanonical / Apocrypha
Usage Words
commit and adultery

Meaning and Definition

moicheuo (moy-khyoo'-o) v. 1. to commit adultery [from G3432] KJV: commit adultery Root(s): G3432

Original Word
μοιχεύω
Transliteration
moicheuo
Derivation
Root: μοιχός R1: 3432
Morphology
verb

Across Lexicons

How independent scholarly lexicons define Strong's G3431. Each definition is shown with its source so you can compare and cite the original reference works.

Extended Strong's Greek Lexicon (Abbott-Smith based)

to commit adultery

Usage: μοιχεύω (μοιχός), [in LXX: Exo.20:13, Lev.20:10, al. (נָאַף) ;] to commit adultery: absol., Mat.5:27 19:18, Mrk.10:19, Luk.16:18 18:20, Rom.2:22 13:9, Jas.2:11; with accusative fem., Mat.5:28. Pass., of the woman, Mat.5:32 19:9 WH, mg.), Jhn.8:4. Metaphorical, of idolatry (see: μιοιχαλίς, and cf. Jer.3:9, a1.), before μετ᾽ αὐτῆς, Rev.2:22.† (AS)

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How Strong's G3431 Is Translated

The English word each shown verse actually uses to render moicheuo, taken from the interlinear word alignment (the same word underlined in the excerpts below). Where a rendering is used more than once, the count is shown.

commit Matthew 5:27 adultery Matthew 5:28

How Strong's G3431 Usage Compares

Indexed coverage includes New Testament, Septuagint / Greek Old Testament, and Deuterocanonical / Apocrypha. Each section below keeps corpus counts and sample passages visible so readers can compare the word across contexts instead of reading one flat concordance list.

  • The largest indexed corpus on this page is New Testament with 11 linked usages.
  • This page lets readers compare New Testament usage with Septuagint / Greek Old Testament usage, which is a key THF advantage over narrower Strong's pages.
  • Deuterocanonical / Apocrypha rows are counted separately so readers can decide how those texts relate to the main word study.

In the Septuagint (LXX)

Strong's G3431 (μοιχεύω) appears 12 times in the Greek Septuagint — the Old Testament the New Testament authors quoted.

Sample Septuagint occurrences:

Read the full Greek Septuagint interlinear with Strong's →

Strong's G3431 by Corpus

Indexed usage grouped by testament and extended corpus so readers can compare this word across the Bible, Septuagint, deuterocanonical books, and 1 Enoch where present.

Strong's G3431 in the New Testament

11 indexed usages in New Testament.

Matthew 5:27 KJV

Ye have heard that it was said by them of old time, Thou shalt not commit adultery:

Matthew 5:28 KJV

But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.

Matthew 19:18 KJV

He saith unto him, Which? Jesus said, Thou shalt do no murder, Thou shalt not commit adultery, Thou shalt not steal, Thou shalt not bear false witness,

Strong's G3431 in the Septuagint / Greek Old Testament

8 indexed usages in Septuagint / Greek Old Testament.

Exodus 20:13 Septuagint / Brenton

Thou shalt not commit adultery.

Leviticus 20:10 Septuagint / Brenton

Whatever man shall commit adultery with the wife of a man, or whoever shall commit adultery with the wife of his neighbor, let them die the death, the adulterer and the adulteress.

Strong's G3431 in the deuterocanonical books / Apocrypha

1 indexed usage in Deuterocanonical / Apocrypha.

Wisdom of Sirach 23:23 Septuagint / Brenton

For first, she hath disobeyed the law of the most High; And secondly, she hath trespassed against her own husband; And thirdly, she hath played the whore in adultery, And brought children by another man.

Usage Excerpts

First 20 linked usage excerpts for Strong's G3431.

Exodus 20:13 Septuagint / Greek Old Testament, Septuagint / Brenton
Thou shalt not commit adultery.
Leviticus 20:10 Septuagint / Greek Old Testament, Septuagint / Brenton
Whatever man shall commit adultery with the wife of a man, or whoever shall commit adultery with the wife of his neighbor, let them die the death, the adulterer and the adulteress.
Deuteronomy 5:17 Septuagint / Greek Old Testament, Septuagint / Brenton
Thou shalt not commit murder.
Jeremiah 3:9 Septuagint / Greek Old Testament, Septuagint / Brenton
And her fornication was nothing accounted of; and she committed adultery with wood and stone.
Ezekiel 23:43 Septuagint / Greek Old Testament, Septuagint / Brenton
Therefore I said, Do they not commit adultery with these? and has she also gone a-whoring after the manner of a harlot?
Hosea 4:13 Septuagint / Greek Old Testament, Septuagint / Brenton
They have sacrificed on the tops of the mountains, and on the hills they have sacrificed under the oak and poplar, and under the shady tree, because the shade was good: therefore your daughters shall go a-whoring, and your daughters-in-law shall commit adultery.
Hosea 4:14 Septuagint / Greek Old Testament, Septuagint / Brenton
And I will not visit upon your daughters when they shall commit fornication, nor your daughters-in-law when they shall commit adultery: for they themselves mingled themselves with harlots, and sacrificed with polluted ones, and the people that understood not entangled itself with a harlot.
Hosea 7:4 Septuagint / Greek Old Testament, Septuagint / Brenton
They are all adulterers, as an oven glowing with flame for hot baking, on account of the kneading of the dough, until it is leavened.
Matthew 5:27 New Testament, KJV
Ye have heard that it was said by them of old time, Thou shalt not commit adultery:
Matthew 5:28 New Testament, KJV
But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
Matthew 19:18 New Testament, KJV
He saith unto him, Which? Jesus said, Thou shalt do no murder, Thou shalt not commit adultery, Thou shalt not steal, Thou shalt not bear false witness,
Mark 10:19 New Testament, KJV
Thou knowest the commandments, Do not commit adultery, Do not kill, Do not steal, Do not bear false witness, Defraud not, Honour thy father and mother.
Luke 16:18 New Testament, KJV
Whosoever putteth away his wife, and marrieth another, committeth adultery: and whosoever marrieth her that is put away from her husband committeth adultery.
Luke 18:20 New Testament, KJV
Thou knowest the commandments, Do not commit adultery, Do not kill, Do not steal, Do not bear false witness, Honour thy father and thy mother.
John 8:4 New Testament, KJV
They say unto him, Master, this woman was taken in adultery, in the very act.
Romans 2:22 New Testament, KJV
Thou that sayest a man should not commit adultery, dost thou commit adultery? thou that abhorrest idols, dost thou commit sacrilege?
Romans 13:9 New Testament, KJV
For this, Thou shalt not commit adultery, Thou shalt not kill, Thou shalt not steal, Thou shalt not bear false witness, Thou shalt not covet; and if there be any other commandment, it is briefly comprehended in this saying, namely, Thou shalt love thy neighbour as thyself.
James 2:11 New Testament, KJV
For he that said, Do not commit adultery, said also, Do not kill. Now if thou commit no adultery, yet if thou kill, thou art become a transgressor of the law.
Revelation 2:22 New Testament, KJV
Behold, I will cast her into a bed, and them that commit adultery with her into great tribulation, except they repent of their deeds.
Wisdom of Sirach 23:23 Deuterocanonical / Apocrypha, Septuagint / Brenton
For first, she hath disobeyed the law of the most High; And secondly, she hath trespassed against her own husband; And thirdly, she hath played the whore in adultery, And brought children by another man.

All Indexed Usage Links

Every indexed verse link for Strong's G3431, grouped by book.

Exodus 1 usage, Septuagint / Greek Old Testament
Leviticus 1 usage, Septuagint / Greek Old Testament
Deuteronomy 1 usage, Septuagint / Greek Old Testament
Jeremiah 1 usage, Septuagint / Greek Old Testament
Ezekiel 1 usage, Septuagint / Greek Old Testament
Hosea 3 usages, Septuagint / Greek Old Testament
Matthew 3 usages, New Testament
Mark 1 usage, New Testament
Luke 2 usages, New Testament
John 1 usage, New Testament
Romans 2 usages, New Testament
James 1 usage, New Testament
Revelation 1 usage, New Testament
Wisdom of Sirach 1 usage, Deuterocanonical / Apocrypha

Strong's G3431 FAQ

What does moicheuo (μοιχεύω) mean?

Moicheuo (Strong's G3431) is a Greek word most simply glossed "commit adultery". moicheuo (moy-khyoo'-o) v. 1. to commit adultery [from G3432]

How many times is moicheuo (μοιχεύω) used in the Bible?

This page currently indexes 20 linked usages for Strong's G3431 across 14 books.

Where can I study moicheuo (μοιχεύω) in context?

Use the linked verse references on this page to study Strong's G3431 in context. The indexed coverage includes New Testament, Septuagint / Greek Old Testament, and Deuterocanonical / Apocrypha.

What English words translate moicheuo (μοιχεύω)?

The visible usage excerpts most often surface English words such as commit and adultery. These are scanning signals from the displayed verses, not replacements for the original-language definition.

Does Strong's G3431 appear in the Septuagint or deuterocanonical books?

Yes. The current local index includes 8 in Septuagint / Greek Old Testament and 1 in Deuterocanonical / Apocrypha for Strong's G3431, with linked reader references where each row is available.