As Paul continues his discourse on Law and the Promise in his letter to the church in Galatia, he raises this question; “Why, then, was the Law given?”
Since God’s promise came hundreds of years before the Law, and the promise is still in effect, and the blessing and inheritance of God cannot be won by keeping the Law– why give the Law at all?
So Paul answers his own question: “It was given alongside the promise to show people their sins. But the Law was designed to last only until the coming of the Child Who was promised…. Is there a conflict, then, between God’s Law and God’s Promises? Absolutely not! If the Law could give us new life, we could be made right with God by obeying it. But the Scriptures declare that we are all prisoners of sin, so we receive God’s promise of freedom only by believing in Jesus Christ.” Galatians 3:19, 21, 22 NLT
God always deals with the root cause; in this case, fallen man is enslaved to the nature and disposition of sin. Only God Himself can deliver us, and He gave Abraham the Promise of His Great Blessing, deliverance from the bondage of sin and new life in the Righteousness of God. The Law was an important part of God’s fulfilling His Promise– it shows countless people how far short of God’s standards we fall, how impossible it is for us to please God by any efforts of our own, how much we need a Savior.
And God has provided the Savior. Jesus Christ pleased His Father in every way while He walked this earth. Then, He took our curse upon Himself on the Cross. He paid the price for all our sins. And now, by believing in Jesus Christ, we receive freedom from our sins, the great promised blessing of God.