1 Corinthians 7:1-16

Now about what you wrote to me: “It's good not to marry.” However, because of the temptation to sexual immorality, it is better that each man have his own wife, and each woman her own husband. The husband should meet his wife's sexual needs, and the wife her husband's. The wife's body doesn't just belong to her, but her husband; and similarly the husband's body doesn't just belong to him but his wife. So don't deprive each other, except by mutual consent for a while—for example because you want to spend time in prayer. Afterwards come together again so that Satan won't tempt you to sin because of your lack of self-control. I'm telling you this not as a command, but as a concession. However, I wish that everyone was like me, but each person has their own gift from God—one has this gift, one has another. To those who are not yet married, or who are widowed, I would say it is better if they remain like me. But if they lack self-control, then they should get married—for it is better to marry than burn with desire. These are my instructions to those who are married—in fact not from me but the Lord: The wife should not leave her husband (or if she does, she should not remarry, or she should return to her husband); and the husband should not leave his wife. Now, to the rest of you (and this is me speaking, not the Lord), I would say, If a Christian man has a non-Christian wife and she is willing to stay with him, he should not leave her. And if a Christian woman has a non-Christian husband, and he is willing to stay with her, she should not leave her husband. For a husband who is not a Christian, the marriage relationship is made holy by the Christian wife, and for a wife who is not a Christian, the marriage relationship is made holy by the Christian husband. Otherwise it would mean your children were impure, but now they are holy. However, if the non-Christian spouse leaves, let them leave. In such cases the Christian man or woman is not slavishly bound, for God has called us to live in peace. Wives, who knows? You may save your husband! Husbands, who knows? You may save your wife!