Deuteronomy 24:4
her first husband who married her and divorced her earlier must not remarry her, because she was defiled, since this is detestable to the LORD. Don't defile the land that the LORD your God is about to give you as a possession.
Jeremiah 3:1
"When a man divorces his wife, she leaves him and becomes another man's wife, will the first husband return to her again? The land would be deeply polluted, would it not? Since you have committed fornication with many lovers, would you now return to me?" declares the LORD.
Leviticus 18:24-28
"You are not to defile yourselves by doing any of these things, since all of these nations that I'm casting out before you have defiled themselves this way.
Joshua 22:17-18
Isn't the evil that happened at Peor enough for us, from which we have yet to be completely cleansed even to this point, and because of which a plague came upon the community of the LORD?