After being set free in Christ, it’s easy to become a bit confused as we set our minds to do right. As we attempt to rid our life of sin, we often turn to good works in the hope that they will somehow offset the sin demerits we sense accumulating against us. So it’s not hard to slip into the very thing true faith should avoid at all costs—works righteousness.
This link between good works and sin is really important, because It’s here that Satan focuses his efforts to destroy us. It’s his primary strategy to rob us of all God has to offer. When the devil convinces Christians to earn their way instead of simply walking in God’s free gift of grace, he handcuffs us, cheating us out of God’s great prize—freedom in Christ. And if Satan can accomplish that, he may just be successful in getting us to walk away from the truth altogether.
From Free from the Power of Sin: the Keys to Growing in God in Spite of Yourself