Now they are right in saying that sex is a natural function, but what they are not saying, and what the Scriptures reveal, is that all natural functions need certain degrees of control. Take hunger, for instance. You do not eat anytime you feel like eating. You learn to control your appe***e. The same applies to sleep. You do not go to sleep whenever you feel like it.
Control increases the enjoyment of a natural function. For example, you enjoy your food more if you do not eat between meals. When a flooding river is controlled by banks, its intensity is increased.
Many young people are discovering that in these days when moral restraints are removed from sexual practices, the result is a kind of listless flood in which one wades continually with no enjoyment whatsoever. But God has designed sex to be stimulating and arousing. That is why marriage cons***utes a kind of channeled control for sex. There is ample provision made for the stream, but the limits increase the intensity and enjoyment. That is what God has in mind as part of the process of producing a whole person. Anything that tears down those boundaries destroys the strength and beauty of wholeness.
So Paul says that we are to learn how to control our bodies in holiness-wholeness-and honor. Control contributes to that sense of wholeness. You are to be in charge of your own body. You are not to be bound to it. You are not to be a slave to it.
Secondly, he said: "no one should wrong his brother or take advantage of him" (v. 6). Let me put it plainly: this means no adultery; no haunting the houses of pros***ution; no sexual involvement with anyone but your marriage partner; no carrying on affairs with your neighbor's wife or husband. Such behavior wrongs others. It steals their property and destroys their rights. The tenth commandment says, "You shall not covet your neighbor's wife, or his manservant or maidservant, his ox or donkey, or anything that belongs to your neighbor" (Ex. 20:17). That perhaps is what some of the Thessalonians were doing, and their conduct had not only destroyed the wholeness of their own lives, but had also hurt others. In counseling, pastors hear seemingly endless stories of damaged families, of children's lives being ruined by the adulterous affairs of their parents. Enormous misery and heartache follow the p***ions of adultery and sexual affairs.