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 thou shalt not cause the land to sin, which the LORD thy God gives thee 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, shall he return unto her again? Is she not a land that is now completely polluted? but thou hast played the harlot with many lovers; yet return again to me, said the LORD.
Leviticus 18:24-28
Do not defile yourselves in any of these things; for in all these things the Gentiles which I cast out before you have defiled themselves;
Joshua 22:17-18
Is the iniquity of Peor too little for us, from which we are not cleansed until this day, for which there was a plague in the congregation of the LORD?