‘Well then, am I suggesting that the law of God is sinful? Of course not! In fact, it was the law that showed me my sin. I would never have known that coveting is wrong if the law had not said, “You must not covet.”’ (Romans 7:7 NLT).

SINCE GOD’S LAW CANNOT SAVE, WHAT GOOD IS IT?
Sin is aroused to further rebellion by God’s law. Does this mean that God’s law is itself sinful? Certainly not! If a mother tells her toddler not to touch the hot stove, she has given the child her law. Yet, the sin nature within the child is immediately activated to do the very thing she was commanded by her mother not to do. She feels the overwhelming urge to touch it! So, the mother’s law was good, but it did not have the power to affect the child’s desire.
 
If God’s law cannot save, what good is it? There are at least three good purposes for God’s law. In Romans 7:7, Paul has named the first purpose, which is to mirror our sinful condition by naming what is sinful, thus reflecting our guilty condition. Paul used as his example the one who covets and is proven sinful by the tenth command of God’s Decalogue, “Thou shalt not covet.” What are the three purposes of the law?
 
THREE “R”s OF THE LAW: (OR THREE “P”s)
1) Reflect our guilty condition (Like a perfect mirror).


2) Restrain our sinful behavior (Like a prison guard).

3) Reveal our need for a Savior (Like a pedagogue).

 
The law is good and useful, but it cannot save. Only faith in Christ saves and empowers us to produce a harvest of righteousness in His name.