What I am saying is that as long as an heir is underage, he is no different from a slave, although he owns the whole estate. The heir is subject to guardians and trustees until the time set by his father. So also, when we were underage, we were in slavery under the elemental spiritual forces of the world. But when the set time had fully come, God sent his Son, born of a woman, born under the law, to redeem those under the law, that we might receive adoption to sonship. Because you are his sons, God sent the Spirit of his Son into our hearts, the Spirit who calls out, “Abba, Father.” So you are no longer a slave, but God’s child; and since you are his child, God has made you also an heir. (Galatians 4:1-7 NIV)
I do not mean to give the impression that the Law should be despised. Neither does Paul intend to leave that impression. The Law ought to be honored.
But when it is a matter of justification before God, Paul had to speak disparagingly of the Law, because the Law has nothing to do with justification. If it thrusts its nose into the business of justification we must talk harshly to the Law to keep it in its place. The conscience ought not to be on speaking terms with the Law. The conscience ought to know only Christ. To say this is easy, but in times of trial, when the conscience writhes in the presence of God, it is not so easy to do. As such times we are to believe in Christ as if there were no Law or sin anywhere, but only Christ. We ought to say to the Law: "Mister Law, I do not get you. You stutter so much. I don't think that you have anything to say to me."
When it is not a question of salvation or justification with us, we are to think highly of the Law and call it "holy, just, and good." (Romans 7:12) The Law is of no comfort to a stricken conscience. Therefore it should not be allowed to rule in our conscience, particularly in view of the fact that Christ paid so great a price to deliver the conscience from the tyranny of the Law. Let us understand that the Law and Christ are impossible bedfellows.
We ought to feel sure that we stand in the grace of God, not in view of our own worthiness, but through the good services of Christ.
As certain as we are that Christ pleases God, so sure ought we to be that we also please God, because Christ is in us. And although we daily offend God by our sins, yet as often as we sin, God's mercy bends over us. Therefore sin cannot get us to doubt the grace of God. Our certainty is of Christ, that mighty Hero who overcame the Law, sin, death, and all evils. So long as He sits at the right hand of God to intercede for us, we have nothing to fear from the anger of God.
Train your conscience to believe that God approves of you. Fight it out with doubt. Gain assurance through the Word of God. Say: "I am all right with God. I have the Holy Ghost. Christ, in whom I do believe, makes me worthy. I gladly hear, read, sing, and write of Him. I would like nothing better than that Christ's Gospel be known throughout the world and that many, many be brought to faith in Him."
This article is an excerpt from Galatians: Selections from Martin Luther’s Commentary, which seeks to take the intimidating work of Luther and make it accessible for the everyday person. It is available as a beautiful print book or a free digital copy.
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