1 Corinthians 7:11-13

Young's Literal Translation

¹¹ but and if she may separate, let her remain unmarried, or to the husband let her be reconciled, and let not a husband send away a wife.

¹² And to the rest I speak -- not the Lord -- if any brother hath a wife unbelieving, and she is pleased to dwell with him, let him not send her away;

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