1 Corinthians 7:10

10 To the married I give this command (not I, but the Lord): A wife must not separate from her husband.

Read 1 Corinthians 7:10 Using Other Translations

And unto the married I command, yet not I, but the Lord, Let not the wife depart from her husband:
To the married I give this charge (not I, but the Lord): the wife should not separate from her husband
But for those who are married, I have a command that comes not from me, but from the Lord. A wife must not leave her husband.