1 Corinthians 7:15-17

But if the unbelieving depart, let him depart. A brother or a sister is not under bondage in such {cases}: but God hath called us to peace. {to peace: Gr. in peace} For what knowest thou, O wife, whether thou shalt save {thy} husband? or how knowest thou, O man, whether thou shalt save {thy} wife? {how: Gr. what} But as God hath distributed to every man, as the Lord hath called every one, so let him walk. And so ordain I in all churches.