1 Corinthians 7:3–4
3 Let the husband render unto the wife due benevolence: and likewise also the wife unto the husband.
4 The wife hath not power of her own body, but the husband: and likewise also the husband hath not power of his own body, but the wife.
Paul is discreet or circumspect in his writing about sexuality. Today there is TMI (Too much information) when it comes to advising on sexuality. We don’t need every detail of a sexual relationship. Here, Paul is not giving advice, he is presenting the proper God-ordained solution to fornication, that is, a healthy marriage.
We are sexual beings and were created as such. The Bible is clear that one purpose of marriage is for the full expression of sexuality. This expression goes back to the Creation of Adam and Eve when they walked in the garden, naked and not ashamed (Genesis 2:5). Paul is not saying that’s what we should be doing in our marriages, but that marriage is a safety zone for sexuality which should be enjoyed. Anything outside of that degrades God’s purpose and plan for a man and a woman.
These two verses present a picture of a perfect marriage, Christian or otherwise. It is one of sexuality, love, and respect.