Leviticus 20:17-21
God guards the integrity of family relationships by judging violations of His ordained boundaries.
17 “ ‘If a man takes his sister—his father’s daughter, or his mother’s daughter—and sees her nakedness, and she sees his nakedness, it is a shameful thing. They shall be cut off in the sight of the children of their people. He has uncovered his sister’s nakedness. He shall bear his iniquity.
18 “ ‘If a man lies with a woman having her monthly period, and uncovers her nakedness, he has made her fountain naked, and she has uncovered the fountain of her blood. Both of them shall be cut off from among their people.
19 “ ‘You shall not uncover the nakedness of your mother’s sister, nor of your father’s sister, for he has made his close relative naked. They shall bear their iniquity.
20 If a man lies with his uncle’s wife, he has uncovered his uncle’s nakedness. They shall bear their sin. They shall die childless.
21 “ ‘If a man takes his brother’s wife, it is an impurity. He has uncovered his brother’s nakedness. They shall be childless.
God guards the integrity of family relationships by judging violations of His ordained boundaries.
This passage specifies covenant consequences for prohibited sexual relationships within close kinship structures, emphasizing shame, exposure, and covenantal consequences that preserve holiness and family order.
Leviticus 20 applies covenant sanctions to violations already prohibited in Leviticus 18. After commands concerning Molek worship, occult dependence, parental dishonor, and severe sexual sins, verses 17-21 complete the sanctions section for forbidden kinship and household relations before the chapter concludes with Israel's call to obey, remain distinct from the nations, and live in the land under the LORD's holy rule.
Israel at Sinai, receiving covenant instruction for life as the LORD's holy people before entering and dwelling in the land. The passage addresses household, kinship, and sexual boundaries in an ancient covenant community where family order, inheritance, honor, and communal purity were inseparable from loyalty to the LORD.
Holiness, Judgment, and the LORD Who Sanctifies His People
The LORD who sanctifies His people requires Israel to reject idolatry, occultism, sexual defilement, and national imitation, preserving holiness as His separated possession in the land.