Matthew 19:8–9
8 He said to them, “Because of your yhardness of heart Moses allowed you to divorce your wives, but from the beginning it was not so. 9 zAnd I say to you: whoever divorces his wife, except for sexual immorality, and marries another, commits adultery.”1
Mark 10:11
11 And he said to them, k“Whoever divorces his wife and marries another commits adultery against her,
Luke 16:18
Divorce and Remarriage
18 d“Everyone who divorces his wife and marries another commits adultery, and he who marries a woman divorced from her husband commits adultery.