Deuteronomy 24:2-4

Good News Translation

² Then suppose she marries another man, ³ and he also decides that he doesn't want her, so he also writes out divorce papers, gives them to her, and sends her away from his home. Or suppose her second husband dies. ⁴ In either case, her first husband is not to marry her again; he is to consider her defiled. If he married her again, it would be offensive to the Lord. You are not to commit such a terrible sin in the land that the Lord your God is giving you.