1 Corinthians 7:10-12 New American Standard Bible (NASB)
10 But to the married I give instructions, not I, but the Lord, that the wife should not [a]leave her husband 11 (but if she does leave, she must remain unmarried, or else be reconciled to her husband), and that the husband should not [b]divorce his wife.
12 But 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 must not [c]divorce her.
1 Corinthians 7:10-12 New International Version (NIV)
10 To the married I give this command (not I, but the Lord): A wife must not separate from her husband. 11 But if she does, she must remain unmarried or else be reconciled to her husband. And a husband must not divorce his wife.
12 To the rest I say this (I, not the Lord): If any brother has a wife who is not a believer and she is willing to live with him, he must not divorce her.