1 Corinthians 7:10-13
English Standard Version
10 To the married (A)I give this charge (not I, but the Lord): (B)the wife should not separate from her husband 11 (but if she does, (C)she should remain unmarried or else be reconciled to her husband), and (D)the husband should not divorce his wife.
12 To the rest I say (I, not the Lord) that if any brother has a wife who is an unbeliever, and she consents to live with him, he should not divorce her. 13 If any woman has a husband who is an unbeliever, and he consents to live with her, she should not divorce him.Read full chapter