1 Corinthians 7:10-11, 15

Now I give this command for the married people. (The command is not from me; it is from the Lord.) A wife should not leave her husband. But if she does leave, she must not marry again, or she should make up with her husband. Also the husband should not divorce his wife.

But if those who are not believers decide to leave, let them leave. When this happens, the Christian man or woman is free. But God called us to live in peace.