1 Corinthians 7:13-15

Young's Literal Translation

¹³ and a woman who hath a husband unbelieving, and he is pleased to dwell with her, let her not send him away;

¹⁴ for the unbelieving husband hath been sanctified in the wife, and the unbelieving wife hath been sanctified in the husband; otherwise your children are unclean, but now they are holy.

¹⁵ And, if the unbelieving doth separate himself -- let him separate himself: the brother or the sister is not under servitude in such [cases], and in peace hath God called us;