It is important to realize that any transgression of God’s Law is sin (I John 3:4), and that all human beings sin (Rom. 3:23; 5:12). With that in mind, one who is learning God’s way of life realizes that anyone with whom he comes in contact, including classmates, practice some form of sin in his/her life. Of course, some sins are more apparent than others—even obvious. Does this make those sins worse—more sinful? As James 2:11 shows, sin is sin: “Now if you commit no adultery, yet if you kill, you are become a transgressor of the law.”

The general principle is to behave around those practicing such lifestyles the same way you would behave around anyone who sins (i.e., everyone). Set the right example. While you should not endorse their behavior, neither should you condemn them for it. Notice Christ’s example in John 8:11, when speaking to a woman who had been caught in the act of adultery: “And Jesus said unto her, Neither do I condemn you: go, and sin no more.” Notice that Christ did not condemn her, but He told her to stop the sin.

If you are questioned about your beliefs concerning certain sinful lifestyles, it is best to state that, while you do not condemn such people, you do not condone their actions either—that you have learned from the Bible that such things are wrong. People’s response will typically be one of indignation. They might accuse you of being judgmental and may label you intolerant, self-righteous, etc. Also, remember that a “soft answer turns away wrath” (Prov. 15:1). Those who see that you are not “throwing stones” will genuinely value what you think and respect your stance. Those who are trying to be argumentative will view anything you say as “throwing stones.”

However, more specifically, some sins are more obvious and the effects can be more severe, carrying greater or longer-lasting consequences. For example, God considers certain sins an abomination, which is defined as abhorrence or something that is disgusting.

While everyone sins, you should avoid those who are blatantly living a sinful lifestyle. For example, if someone is a drug addict, a serial killer, a habitual thief, etc., you should avoid them—you should not be friends with them, as “evil company corrupts good habits” (I Cor. 15:33).

Also notice Paul’s admonition: “I wrote unto you in an epistle not to company with fornicators: Yet not altogether with the fornicators of this world, or with the covetous, or extortioners, or with idolaters; for then must you needs go out of the world” (I Cor. 5:9-10). While Paul is referencing a previous letter to address behavior in the Church (vs. 11), we can glean that one should not closely associate with such people in the world as well. But this does not mean that one must avoid them altogether—that would be impossible, as one would need to live like a hermit.

Further, you should not look down upon them or treat them poorly. As a distant acquaintance, you have an opportunity to be an example—a light—to them.