Matthew 19:4-9
19:4 He answered, “Have you not read that from the beginning the Creator made them male and female,
19:5 and said, ‘For this reason a man will leave his father and mother and will be united with his wife, and the two will become one flesh’?
19:6 So they are no longer two, but one flesh. Therefore what God has joined together, let no one separate.”
19:7 They said to him, “Why then did Moses command us to give a certificate of dismissal and to divorce her?”
19:8 Jesus said to them, “Moses permitted you to divorce your wives because of your hard hearts, but from the beginning it was not this way.
19:9 Now I say to you that whoever divorces his wife, except for immorality, and marries another commits adultery.”