A few days ago we considered how to pursue purity. Today, we want to consider why we should pursue purity. I Corinthians 6 gives us several reasons:

First, those who practice sexually immorality will not inherit the kingdom of God (v9-10). These words ought to startle us awake. Living in sexual sin is simply incompatible to a relationship with the Lord. Those who are living together, sleeping around, or practicing homosexual acts have no reason to think they are saved – they are outside the kingdom of God.

Second, sexual immorality belongs to our old way of life (v11). “Such were some of you,” but not anymore. Now we have been washed from that dirty behavior. Now we have been set apart from those sins. Now we are declared righteous in Jesus. We have a new life, and sexual immorality can have no part in it. In other words, we must live out who we now are in Christ.

Third, our bodies are meant for the Lord (v13-18). We are to use our bodies in service to Jesus, not in service to sin. How could we join our bodies to another in sexual sin, when we are joined to Christ?

Fourth, our bodies are temples of the Holy Spirit (v19). How could we desecrate his temple by involving it in sexual sin? God is holy, and as his temples, we must strive to be holy.

Fifth, our bodies belong to God (v19-20). When Jesus died to pay for our sins, he purchased us out of our slavery to sin. We now belong to him. And so we must use our bodies to glorify him. Our actions must honor him.

Sexual immorality of all kinds is a characteristic of the old sinful way of life that is destined for hell. But in Christ, we have been washed and justified; we have a new life. Our bodies are set apart unto God. They are meant for the Lord. They are temples of the Holy Spirit. They belong to Him.

And so we must flee sexual immorality.

As a young person, the slogan for purity was “Just Say No.” Which I suppose was good as far it went. The problem was that it simply didn’t go far enough. Purity is much more than simply avoiding sex outside of marriage. If we are going to pursue purity, we must guard our eyes, guard our minds, and guard our actions.

Guard Our Eyes – We need to guard our eyes from those things which would encourage impure or lustful thoughts (Job 31:1, Psalm 101:3). This of course includes pornography of all kinds. But it also includes certain movies, TV shows, pictures on Facebook, magazines, and books. It includes how we look at another person; we must not look at them with lustful intent (Matthew 5:28). Indeed to drive this point home, Jesus goes on to speak of gouging out our eyes. His point is not that we should injure ourselves, but that we must get serious about this. We need to guard our eyes.

Guard Your Mind – In Colossians 3:5, Paul tells us to put to death sexual immorality, and then works backwards showing how one gets to that point. And it begins with covetousness – desiring to possess that other person to use them for our own gratification. His point is clear – unless you are married to that person, he/she doesn’t belong to you, so don’t think (and then act) as if he/she does. Another root of sexual immorality that he points to is evil desire or lust. We are not to think of others with sexual desire. We are not to fantasize about others in this way. We need to guard our minds.

Guard Our Actions – Paul continues in Colossians 3:5 from coveting and evil desire to passion and impurity. Those are actions that flow from evil desire and lead to sexual immorality. So the Bible is not just teaching us to say no to sexual immorality, but also to those actions that would lead to sexual immorality. Song of Solomon warns us not to awaken love until it pleases (2:7, 3.5). That is, don’t do those things that will awaken desires within you that you can’t lawfully fulfill outside of marriage. We need to guard our actions.

Sexual immorality doesn’t just happen. It occurs when we fail to guard our eyes, guard our minds, and guard our actions. So let’s be on our guard. Pursue purity.