1 Corinthians 7:10-12 (King James Version)

 ¹⁰And unto the married I command, yet not I, but the Lord, Let not the wife depart from her husband:

 ¹¹But and if she depart, let her remain unmarried or be reconciled to her husband: and let not the husband put away his wife.

 ¹²But to the rest speak I, not the Lord: If any brother hath a wife that believeth not, and she be pleased to dwell with him, let him not put her away.