For the law was given through Moses; grace and truth came through Jesus Christ.
In “The Word Became Flesh” we looked at the need for balance between grace and truth. There is no similar balance between law and grace, only differences between the two.
The Law of Moses didn’t accomplish what it was meant to do. Instead of bringing righteousness by instructing the Israelites of God’s expectations, it only brought guilt as the people then knew that they were disobeying God.
The law brought guilt and death because it was unable to be upheld. Ultimately the law was meant to drive home the fact that the people were sinful and in need of a savior. When Jesus arrived, some acknowledged that they were sinners and repented of their ways. Others clung to their self righteousness and claimed that they had upheld the law.
Jesus’ arrival meant the end of trying to live righteously by following the Law of Moses. Righteousness was given in the form of grace. It was free to all who asked because they acknowledged their lack of righteousness.
The grace of Jesus made up for everything that the law was lacking. We couldn’t obtain righteousness through the law so God gave it to us in abundance through Jesus.