Deuteronomy 24:4
Her former husband, who sent her away, may not take her again to be his wife, after she is defiled; for that is abomination before the LORD: and you shall not cause the land to sin, which the LORD your God gives you for an inheritance.
Jeremiah 3:1
They say, If a man puts away his wife, and she goes from him, and becomes another man's, may he return unto her again? shall not that land be greatly polluted? but you have played the harlot with many lovers; yet return again to me, says the LORD.
Leviticus 18:24-28
Defile not you yourselves in any of these things: for in all these the nations are defiled which I cast out before you:
Joshua 22:17-18
Is the iniquity of Peor too little for us, from which we are not cleansed until this day, although there was a plague in the congregation of the LORD,