Matthew 19:3-9

3 And Pharisees came up to him and tested him by asking, "Is it lawful to divorce one's wife for any cause?"
4 He answered, "Have you not read that he who made them from the beginning made them male and female,
5 and said, 'For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh'?
6 So they are no longer two but one flesh. What therefore God has joined together, let not man put asunder."
7 They said to him, "Why then did Moses command one to give a certificate of divorce, and to put her away?"
8 He said to them, "For your hardness of heart Moses allowed you to divorce your wives, but from the beginning it was not so.
9 And I say to you: whoever divorces his wife, except for unchastity, and marries another, commits adultery."
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.

Mark 10:1-12

1 And he left there and went to the region of Judea and beyond the Jordan, and crowds gathered to him again; and again, as his custom was, he taught them.
2 And Pharisees came up and in order to test him asked, "Is it lawful for a man to divorce his wife?"
3 He answered them, "What did Moses command you?"
4 They said, "Moses allowed a man to write a certificate of divorce, and to put her away."
5 But Jesus said to them, "For your hardness of heart he wrote you this commandment.
6 But from the beginning of creation, 'God made them male and female.'
7 'For this reason a man shall leave his father and mother and be joined to his wife,
8 and the two shall become one flesh.' So they are no longer two but one flesh.
9 What therefore God has joined together, let not man put asunder."
10 And in the house the disciples asked him again about this matter.
11 And he said to them, "Whoever divorces his wife and marries another, commits adultery against her;
12 and if she divorces her husband and marries another, she commits adultery."
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.

Luke 16:18

18 "Every one who divorces his wife and marries another commits adultery, and he who marries a woman divorced from her husband commits adultery.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.