1 Corinthians 7:15-17

15 But if the unbeliever leaves, let him go. The believing brother or sister is not bound in such cases. God has called you b to live in peace.

16 How do you know, wife, whether you will save your husband? Or how do you know, husband, whether you will save your wife?

17 Regardless, 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.