About the things you wrote: "It is good for a man not to have relations with a woman."
But because of sexual immorality, each man should have his own wife, and each woman should have 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 authority over her own body, but her husband does. Equally, a husband does not have authority 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 just like me. But each has his own gift from God, one this and another 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, for it is better to marry than to burn with desire.
I command the married-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 leave his wife.
But to the rest I, not the Lord, say: If any brother has an unbelieving wife, and she is willing to live with him, he must not leave her.
Also, if any woman has an unbelieving husband, and he is willing to live with her, she must not leave her husband.
For the unbelieving husband is sanctified by the wife, and the unbelieving wife is sanctified by the Christian husband. Otherwise your children would be unclean, but now 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 peace.
For you, wife, how do you know whether you will save your husband? Or you, husband, how do you know whether you will save your wife?
However, each one must live his life in the situation the Lord assigned when God called him. This is what I command in all the churches.
Was anyone already circumcised when he was called? He should not undo his circumcision. Was anyone called while uncircumcised? He should not get circumcised.
Circumcision does not matter and uncircumcision does not matter, but keeping God's commandments does.