Let’s look at Galatians 4:1-2, “Now I say, That the heir, as long as he is a child, differeth nothing from a servant, though he be lord of all; But is under tutors and governors until the time appointed of the father.” Here Paul compares an heir to someone who is under the Law in that the heir is no different than the slave. He has no rights to speak of as a child because he is not over the estate yet. Thus, he may be “lord of all” one day, but not until he has come of age.
Notice v.3, “Even so we, when we were children, were in bondage under the elements of the world:” The point is that under the Law, the Jew (we) were in infancy. They were not yet mature.
Notice v.4-5, “But when the fulness of the time was come, God sent forth his Son, made of a woman, made under the law, To redeem them that were under the law, that we might receive the adoption of sons.” Now we see that in God’s timing, He sent Jesus to redeem us from the Law. The phrase, “made under the law”, means that Jesus was raised under the Mosaic Law.
Notice v.6, “And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father.” The proof that Jesus has done this is the Holy Spirit. The Holy Spirit within us is proof of our salvation. Ephesians 1:13-14 says, “In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that Holy Spirit of promise, Which is the earnest of our inheritance until the redemption of the purchased possession…” The bottom line is that we do not have to live under the Law any longer. God has made a way through His Son for us to live free from the Law if we accept it. What a deal!
It is also proof that we are no longer servants, but sons. We have come of age. Jesus said in John 15:15, “Henceforth I call you not servants; for the servant knoweth not what his lord doeth: but I have called you friends; for all things that I have heard of my Father I have made known unto you.”