Deuteronomy 24:2-4

EasyEnglish Bible

² After she has left his house, she might marry another man.

³ Later, her second husband may also not like her any more. So he also gives her a letter to finish the marriage. He sends her away from his house too. Or perhaps her second husband dies. ⁴ If that happens, her first husband must not marry her again. That is because she has had sex with another man. To marry her again would be a sin that the Lord hates. You must not do sins like that in the land that the Lord your God is giving to you as your new home.