1 Corinthians 7:10

7:9 but if they cannot exercise self-control, let them marry. For it is better to marry than to burn with passion.

7:10 Now to the married I command, yet not I but the Lord: A wife is not to depart from her husband.

7:11 But even if she does depart, let her remain unmarried or be reconciled to her husband. And a husband is not to divorce his wife.