Matthew 19:9

9 I tell you that anyone who divorces his wife and marries another woman is guilty of adultery. The only reason for a man to divorce his wife is if his wife has sexual relations with another man."

Matthew 19:9 In-Context

7 The Pharisees asked, "Why then did Moses give a command for a man to divorce his wife by giving her divorce papers?"
8 Jesus answered, "Moses allowed you to divorce your wives because you refused to accept God's teaching, but divorce was not allowed in the beginning.
9 I tell you that anyone who divorces his wife and marries another woman is guilty of adultery. The only reason for a man to divorce his wife is if his wife has sexual relations with another man."
10 The followers said to him, "If that is the only reason a man can divorce his wife, it is better not to marry."
11 Jesus answered, "Not everyone can accept this teaching, but God has made some able to accept it.
Scripture taken from the New Century Version. Copyright © 1987, 1988, 1991 by Thomas Nelson, Inc. Used by permission. All rights reserved.