For the unbelieving husband is sanctified in the wife, and the unbelieving wife is sanctified in the husband. Otherwise your children would be unclean, but now they are holy. Yet if the unbeliever departs, let there be separation. The brother or the sister is not under bondage in such cases, but God has called us in peace. For how do you know, wife, whether you will save your husband? Or how do you know, husband, whether you will save your wife? Only, as the Lord has distributed to each man, as God has called each, so let him walk. So I command in all the assemblies.
For the unbelieving husband is sanctified by the wife, and the unbelieving wife is sanctified by the husband: else were your children unclean; but now are they holy. 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. For what knowest thou, O wife, whether thou shalt save thy husband? or how knowest thou, O man, whether thou shalt save thy wife? 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.
1 Corinthians – Chapter:7 Verse:14-17