1 Corinthians 7:10–12

10 To the married I give charge, not I but the Lord, that the wife should not separate from her husband 11 (but if she does, let her remain single or else be reconciled to her husband)—and that the husband should not divorce his wife.

12 To the rest I say, 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.