1 Corinthians 7:1-16

Now in response to the matters you wrote about: “It is good for a man not to have sexual relations with a woman.” But because sexual immorality is so common, each man should have sexual relations with his own wife, and each woman should have sexual relations with her own husband. A husband should fulfill his marital duty to his wife, and likewise a wife to her husband. A wife does not have the right over her own body, but her husband does. In the same way, a husband does not have the right over his own body, but his wife does. Do not deprive one another — except when you agree for a time, to devote yourselves to prayer. Then come together again; otherwise, Satan may tempt you because of your lack of self-control. I say this as a concession, not as a command. I wish that all people were as I am. But each has his own gift from God, one person has this gift, another has that. I say to the unmarried and to widows: It is good for them if they remain as I am. But if they do not have self-control, they should marry, since it is better to marry than to burn with desire. To the married I give this command  — not I, but the Lord — a wife is not to leave her husband. But if she does leave, she must remain unmarried or be reconciled to her husband — and a husband is not to divorce his wife. But I (not the Lord) say to the rest: If any brother has an unbelieving wife and she is willing to live with him, he must not divorce her. Also, if any woman has an unbelieving husband and he is willing to live with her, she must not divorce her husband. For the unbelieving husband is made holy by the wife, and the unbelieving wife is made holy by the husband. Otherwise your children would be unclean, but as it is they are holy. But if the unbeliever leaves, let him leave. A brother or a sister is not bound in such cases. God has called you to live in peace. Wife, for all you know, you might save your husband. Husband, for all you know, you might save your wife.