Leviticus [Pertaining to Levites] 20:20-23

²⁰If a man lies with his uncle’s wife, he has uncovered his dod ·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.

²²“‘You shall therefore keep all my regulations, and all my judgments, and do them; that the land, where I am bringing you to dwell, may not vomit you out. (LY:7)

²³You shall not walk in the regulations and customs of the nations, which I am casting out before you: for they did all these things, and therefore I abhorred them.