1 Corinthians 7:10-16

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. For all the others I say this (I am saying this, not the Lord): If a Christian man has a wife who is not a believer, and she is happy to live with him, he must not divorce her. And if a Christian woman has a husband who is not a believer, and he is happy to live with her, she must not divorce him. The husband who is not a believer is made holy through his believing wife. And the wife who is not a believer is made holy through her believing husband. If this were not true, your children would not be clean, but now your children are holy. 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. Wife, you don’t know; maybe you will save your husband. And husband, you don’t know; maybe you will save your wife.