1 Corinthians 7:15-20

15But if the unbeliever leaves, let him go. The believing brother or sister is not bound in such cases. God has called you1 to live in peace. 16How do you know, wife, whether you will save your husband? Or how do you know, husband, whether you will save your wife?

17Regardless, each one should lead the life that the Lord has assigned to him and to which God has called him. This is what I prescribe in all the churches. 18Was a man already circumcised when he was called? He should not become uncircumcised. Was a man still uncircumcised when called? He should not be circumcised. 19Circumcision is nothing and uncircumcision is nothing. Keeping God’s commandments is what counts.

20Each one should remain in the situation he was in when he was called.