The wife/husband does not have authority over her own body but yields it to her husband/wife.

1 Corinthians 7:1-9

Now for the matters you wrote about: “It is good for a man not to have sexual relations with a woman.” But since sexual immorality is occurring, each man should have sexual relations with his own wife, and each woman with her own husband. The husband should fulfill his marital duty to his wife, and likewise the wife to her husband. The wife does not have authority over her own body but yields it to her husband. In the same way, the husband does not have authority over his own body but yields it to his wife. Do not deprive each other except perhaps by mutual consent and for a time, so that you may devote yourselves to prayer. Then come together again so that Satan will not tempt you because of your lack of self-control. I say this as a concession, not as a command. I wish that all of you were as I am. But each of you has your own gift from God; one has this gift, another has that.

Now to the unmarried and the widows I say: It is good for them to stay unmarried, as I do. But if they cannot control themselves, they should marry, for it is better to marry than to burn with passion.

In their letter to Paul, the Corinthians have raised six questions about single and married life. Are married couples to continue normal sexual relations after conversion? Yes

Why?

Sexual relations with our own couple are our obligation, we do not have authority over our own body but our wife our husband.

For we are the temple of the Lord, we should keep us clean to the Lord and to our couple.

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本章主要談婚姻，5章： 講淫亂（伊比究魯學派講淫亂）（斯多亞學派講禁慾）

保羅把夫妻雙方放在同等的地位。自己的身體屬於自己而是屬於對方，夫妻彼此委身。夫妻同房為了使對方喜悅。神造人是有慾望的、喜悅的。夫妻的親密關係是聖潔的。婚姻不是次要的選擇。

不婚不嫁，不表示比較聖潔。單身是神特別的恩賜！

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How?

Respect the marriage before the Lord, this is a covenant with my wife before the Lord. This is the symbol of a Christian before the Lord and men.