1 Corinthians 7:12

7:12 But to the rest I--not the Lord--say, if any brother has an unbelieving wife, and she is content to live with him, let him not leave her.
-World English Bible

Other Translation

7:12 But 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.
-King James Version