1 Corinthians 7:12 in the King James Version
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.
Context
11 (but if she departs, let her remain unmarried, or else be reconciled to her husband), and that the husband not leave his wife.
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.
13 The woman who has an unbelieving husband, and he is content to live with her, let her not leave her husband.