“[…] that through them you may participate in the divine nature and escape the corruption in the world caused by evil desires” 2 Peter 1:4 b, c NIV.
This passage shows something foundational about the Christian faith. It shows a view of the world differing greatly from other ancient world views.
The first view this passage counters was the prevalent Platonic metaphysics of the day. Common among the Greek speaking world of the time was the idea that the spiritual realm was perfect and the fleshly realm corrupt. The flesh was seen as a prison in which the spirit was trapped. Everything to do with the flesh was corrupt and of no permanent spiritual value. The way to perfection was to escape the flesh. This very negative view of all things material actually crept into the church over time and influenced much of later church practice. However, the biblical view is not that the material universe is corrupt. Instead, God made it and declared all that he made good. The physical universe in which we live is good, but it is our sins, inspired by our evil desires, which corrupt the world. There is nothing wrong with enjoying the physical, the sensual, the fleshly—within proper bounds of righteousness. It was this for which Jesus was often attacked. Many times he was attacked for hanging out with sinners and dining with them. He even said that he was accused of being a glutton and a drunkard (Mt 11:19). For the follower of Christ, all food and drink is good and holy if enjoyed within the bounds of proper moderation and with thankfulness to God who provided. Likewise, sex is good and holy within the faithful bounds of marriage.
This passage also counters a second view. Though already ancient at the time, there is no evidence I am aware of that the author intended to counter this view or even knew about it. However, it is a common view in certain circles today, and this passage answers it perfectly. Buddhists view the problem of suffering to be one of desire. We suffer because we have desires. To escape suffering we must stop desiring. Though the apostle probably didn’t have this in mind, it is faced by the church today. A form of it is even found in the church. Many pretend today that we are not to have desires. They seem to think the Christian life is to be a form of monastic existence with no desires for money, a home, a family, etc. However, this passage shows it to be evil desires that are the problem. There is nothing wrong with wanting to acquire what you do not have—or wanting more of what you do have. The problem is when you either desire what you should not have, or when your desires lead you to behave in an unrighteous way to fulfill the desires.
The way to handle these desires is to see them as what they are. Imagine them as a checklist. We all have a list of things we want and things we do not want. If we listed these and put a check into the category of want and don’t want we can see what our desires are. Even the things we “don’t want” often manifest as negative desires (not evil, but as something we desire to not have or experience). I do not want to get sick. This is itself the negative side of a desire for health. The list of our desires actually says a great deal about us. We must understand that it is not the desire that drives us to act. We choose to act upon those desires. Through the indwelling Holy Spirit we are empowered to choose. We then make our choice. Desiring evil is not itself a sin—it is a symptom of sinfulness. It is when we act upon the evil desire that it becomes sin. It is this which shows the truth about us. For example, Jesus countered, in Matthew 5:27f, the belief that one was fine so long as one didn’t actually (physically) commit adultery, but only looked. Jesus said that anyone who looked on a woman with lust had already committed adultery with her “in his heart.” Is he saying that the look itself counts on that person’s tally of sins: “Hey! You looked! So we’ll mark down a sin check mark here in your book.” No. That is not what he meant. That would make the desire itself a sin. What he means is that the desire tells the truth about our heart. The drive for sin is internal and works itself out in our actions. The person who hasn’t actually touched the woman, may be without credited sin, but cannot claim to be truly righteous if he has lustful thoughts when looking at the woman. Those thoughts show that the potential for the sin dwells within the heart of the person. The man may not be committing the deed of adultery, but the look and thought prove that he is indeed an adulterous person—it shows the person still desires to sin, even if he is resisting it. The goal is to be transformed into a person who no longer even desires sin.
So understand your desires (good and evil) for what they are. They tell about your maturity and about where you are in your Christian walk. They tell you that you are not perfect—but neither are any of us. We are to seek improvement daily. Hopefully, we will no longer desire tomorrow what we desire today. In time the evil desires drop away as we are transformed more and more into the image of Christ. However, there is no reason to think the goal is for us to have no desires whatsoever. We are to desire justice, righteousness, more of Christ, a deeper walk with God, the love of our family, and yes, even a financially secure life. There is no sin in these desires—and neither is there sin in striving to see them come to pass.
The world was created to be a good place—it is the place we were created to occupy. God made it and declared it good. Desire is good—so long as it is desire for what is good, and leads us to fulfill those desires righteously.