1 Corinthians 7:13-17

¹³And if any woman has an unbelieving husband, and he consents to live with her, she must not divorce her husband. ¹⁴For the unbelieving husband is sanctified through his wife, and the unbelieving wife is sanctified through her believing husband; for otherwise your children are unclean, but now they are holy. ¹⁵Yet if the unbelieving one is leaving, let him leave; the brother or the sister is not under bondage in such cases, but God has called us in peace. ¹⁶For how do you know, wife, whether you will save your husband? Or how do you know, husband, whether you will save your wife?

¹⁷Only, as the Lord has assigned to each one, as God has called each, in this way let him walk. And so I direct in all the churches.