Scripture is also clear about the evil of fornication—premarital sexual intercourse—which most of our culture accepts as normal and irresistible. We see many couples suffering from the consequences of their early promiscuity. The “sexual freedom” of our time isn’t free and usually carries some pretty heavy costs.
The Bible also lists other practices that are “abominations” to God (Le v. 18, Rom. 1:21-32, I Thess. 4:1-8, and I Cor. 6:12-20). These include homosexuality, bestiality, and incest.
And last, there is a vast array of possible sexual practices for married couples that are not mentioned at all in Scripture (we can find no reference to Internet pornography, vibrators, or videos). So, since we aren’t likely to find a definitive answer, the best we can do is find the principles God has given us and apply them to the cultural setting we’re living in. As we look for those you may not be surprised to find that we’re not much different in the twenty-first century than how mankind has been since creation. We have the same anatomical equipment, the same physiologic hormones, the same mental capacity for lust and fantasy, and the same relational needs that have always driven men and women to seek sexual pleasure and intimacy. As Ecclesiastes says, “there is nothing new under the sun,” except maybe the vast array of new toys.
Many studies have confirmed what biblical commandments imply. That is that becoming one flesh with one partner provides the best setting for satisfying sexual intimacy. Sex is neither a spectator sport for group indulgence nor an event to test a person’s ability to score with multiple partners. Casual sex as a way to prove one’s prowess or simply achieve physiologic relief of sexual tension only confirms that his or her ability to copulate is intact. Although providing some pleasure, it fails to meet the deeper need for intimacy that sex was designed to give.
A couple in a long-term committed relationship enters into a more secure and trusting territory with each sexual encounter. In that bed sex can truly become “making love” rather than just having sex. Multiple partners create mistrust, performance anxiety, and comparison evaluations that are barriers to the deepest levels of intimacy.