(20) Thy neighbour's wife.--For committing adultery, which is here branded as a defilement, whether with a betrothed or married woman, both guilty parties incurred the penalty of death by stoning. (See Leviticus 20:10; Deuteronomy 22:22; Ezekiel 16:38; Ezekiel 16:40; John 8:5.) In Egypt the adulterer received a thousand strokes with a stick, and the guilty woman had her nose cut off, and to this day the criminal wife among the Bedouins is executed by her husband, father, or brother, without any mercy. Both criminals were also punished with death among other Eastern nations.

Verse 20. - The second prohibition is, Thou shalt not lie carnally with thy neighbour's wife - a prohibition already made in other words in the ten commandments. The punishment for adultery is death by stoning (chapter 20:10; Deuteronomy 22:22; John 9:5) - a more severe penalty than was usually inflicted in other nations.

18:1-30 Unlawful marriages and fleshly lusts. - Here is a law against all conformity to the corrupt usages of the heathen. Also laws against incest, against brutal lusts, and barbarous idolatries; and the enforcement of these laws from the ruin of the Canaanites. God here gives moral precepts. Close and constant adherence to God's ordinances is the most effectual preservative from gross sin. The grace of God only will secure us; that grace is to be expected only in the use of the means of grace. Nor does He ever leave any to their hearts' lusts, till they have left him and his services.Moreover, thou shalt not lie carnally with thy neighbour's wife,.... Which is adultery, and a breach of the seventh command, Exodus 20:14,

to defile thyself with her; not only adultery is a defiling a man's wife, as it is sometimes called, but the adulterer defiles himself: all sin is of a defiling nature, but especially this, which defiles a man both in soul and body, and brings a blot and stain upon his character, which shall not be wiped off, Proverbs 6:32.