The law of God points out sin and the grace of God is always greater.
Moreover the law entered, that the offence might abound. But where sin abounded, grace did much more abound: (Romans 5:20 KJV)
The law mentioned in this scripture verse is a reference to the Mosaic Law given to Moses upon Mt. Horeb, which is also known as the mountain of God. The Old Testament law acts as a mirror, showing or reflecting back to mankind their utterly despicable and sinful heart condition. This law continues to point out sin of mankind today in this Age of grace.
The grace of God perfectly counteracts or multiplies the spiritual impact of sin as it is rendered or defined according to the parameters set forth in the law. The law finely illustrates or illuminates sin like a “fine tooth comb” down to the littlest imperfection or breaking of the law but God’s grace is always more powerful and greater than any sum of sin the law uncovers. God’s grace perfectly multiplies to cover any confessed sin.
In the New Testament God’s grace takes the place of mankind’s sacrifice for sin according to the law and ancient system of restoration. In our own human weakness mankind cannot ever possibly measure up against God’s law independent of the rich sacrifice of Jesus Christ reckoning the price of sin in full for all mankind through the grace of God and marked paid in full through the work of His Son Jesus Christ upon the cross of Calvary.
God’s grace abundantly covers the gap between the Old Testament law, which identifies grievous sin and the calculation of the cost of sin, which is so steep mankind can never cover it in his natural state.