1 Corinthians 7:10-13

7:10 But to the married I command—not I, but the Lord—that the wife not leave her husband

7:11 (but if she departs, let her remain unmarried, or else be reconciled to her husband), and that the husband not leave his wife.

7:12 But to the rest I—not the Lord—say, if any brother has an unbelieving wife, and she is content to live with him, let him not leave her.

7:13 The woman who has an unbelieving husband, and he is content to live with her, let her not leave her husband.