Cross reference
Mark 10:12
12 and if she herself shall put away her husband, and marry another, she committeth adultery.
1 Corinthians 7:11
11 (but should she depart, let her remain unmarried, or else be reconciled to her husband); and that the husband leave not his wife.
1 Corinthians 7:13
13 And the woman that hath an unbelieving husband, and he is content to dwell with her, let her not leave her husband.