1 Corinthians 7:11–13

11 But if she does leave, she must remain unmarried or be reconciled to her husband—and a husband is not to divorce his wife.d 12 But I (not the Lord) say to the rest: If any brothere has an unbelieving wife and she is willing to live with him, he must not divorce her. 13 Also, if any woman has an unbelieving husband and he is willing to live with her, she must not divorce her husband.