Matthew 19:7-9

New Catholic Bible

⁷ They said to him, “Why then did Moses command that a man give his wife a certificate of divorce and send her away?” ⁸ He replied, “It was because you were so hard-hearted that Moses allowed you to divorce your wives, but it was not like this from the beginning. ⁹ Now I say to you: if a man divorces his wife for any reason except if the marriage was unlawful and marries another, he commits adultery.”