The freedom we have in Christ can be a bit confusing. The Bible says, “The sting of death is sin, and the power of sin is the law.” But don’t you find that a little surprising? We tend to think about freedom from sin only as being liberated from the problem of sinning. So how could being freed from law have anything to do with sin losing its power over us? Well, in fact it has everything to do with it! But if you’re like most Christians, your grasp of this truth is probably a little fuzzy.
       Don’t feel alone; you’re in good company! I’ve often asked believers: “How many of you feel like you are truly free from the power of sin?” I haven’t had anyone jump up yet shouting, “that’s me!” Though we may accept by faith the fact that we are free from sin’s power, we commonly don’t experience it as a reality in our daily lives. That’s just the way it is. No worries; there’s a solution to this bewildering problem.

From Free from the Power of Sin: the Keys to Growing in God in Spite of Yourself