New Revised Standard Version
To the married I give this command—not I but the Lord—that the wife should not separate from her husband

Contemporary English Version
I instruct married couples to stay together, and this is exactly what the Lord himself taught. A wife who leaves her husband

New American Bible
To the married, however, I give this instruction (not I, but the Lord): A wife should not separate from her husband

Douay-Rheims Bible
But to them that are married, not I, but the Lord, commandeth that the wife depart not from her husband.

But to them that are married, not I, but the Lord, commandeth that the wife depart not from her husband.

yet.

1 Corinthians 7:12,25,40 For to the rest I speak, not the Lord. If any brother hath a wife that believeth not and she consent to dwell with him: let him not put her away. . . .

Let.

1 Corinthians 7:15 But if the unbeliever depart, let him depart. For a brother or sister is not under servitude in such cases. But God hath called us in peace.

Jeremiah 3:20 But as a woman that despiseth her lover, so hath the house of Israel despised me, saith the Lord.

Malachi 2:14-16 And you have said: For what cause? Because the Lord hath been witness between thee, and the wife of thy youth, whom thou hast despised: yet she was thy partner, and the wife of thy covenant. . . .

Matthew 5:32 But I say to you, that whosoever shall put away his wife, excepting the cause of fornication, maketh her to commit adultery: and he that shall marry her that is put away, committeth adultery.

Matthew 19:6-9 Therefore now they are not two, but one flesh. What therefore God hath joined together, let no man put asunder. . . .

Mark 10:11,12 And he saith to them: Whosoever shall put away his wife and marry another committeth adultery against her. . . .

Luke 16:18 Every one that putteth away his wife and marrieth another committeth adultery: and he that marrieth her that is put away from her husband committeth adultery.