1 Corinthians 7:11-13

New International Version - UK

¹¹ But if she does, she must remain unmarried or else be reconciled to her husband. And a husband must not divorce his wife.

¹² To the rest I say this (I, not the Lord): If any brother has a wife who is not a believer and she is willing to live with him, he must not divorce her. ¹³ And if a woman has a husband who is not a believer and he is willing to live with her, she must not divorce him.