1 Corinthians 7:2–13

²but on account of fornications, let each have his own wife, and each woman have her own husband. ³Let the husband render her due to the wife, and in like manner the wife to the husband. ⁴The wife has not authority over her own body, but the husband: in like manner also the husband has not authority over his own body, but the wife. ⁵Defraud not one another, unless, it may be, by consent for a time, that ye may devote yourselves to prayer, and again be together, that Satan tempt you not because of your incontinency. ⁶But this I say, as consenting to, not as commanding it. ⁷Now I wish all men to be even as myself: but every one has his own gift of God: one man thus, and another thus. ⁸But I say to the unmarried and to the widows, It is good for them that they remain even as I. ⁹But if they have not control over themselves, let them marry; for it is better to marry than to burn.

¹⁰But to the married I enjoin, not I, but the Lord, Let not wife be separated from husband; ¹¹(but if also she shall have been separated, let her remain unmarried, or be reconciled to her husband;) and let not husband leave wife. ¹²But as to the rest, I say, not the Lord, If any brother have an unbelieving wife, and she consent to dwell with him, let him not leave her. ¹³And a woman who has an unbelieving husband, and he consents to dwell with her, let her not leave her husband.