1 Corinthians 7:10-12 New Revised Standard Version, Anglicised Catholic Edition (NRSVACE)
10 To the married I give this command—not I but the Lord—that the wife should not separate from her husband 11 (but if she does separate, let her remain unmarried or else be reconciled to her husband), and that the husband should not divorce his wife.
12 To the rest I say—I and not the Lord—that if any believer[a] has a wife who is an unbeliever, and she consents to live with him, he should not 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.