Martin Luther’s comments on Galatians 4:3 will make the legalist in us squirm. But they will also help explain what “Christ alone” means for the guilty conscience:
The law does tell me to love the Lord my God, but it does not enable me to do so or to lay hold of Christ.
I do not say this in order that the law should be despised; nor does Paul intend this. It should be held in great esteem. But because Paul here is dealing with justification, he has to speak of the law as something contemptible and odious, for justification is poles apart from the law. We cannot speak contemptuously enough of the law when we are dealing with this matter. When the conscience is in this conflict, therefore, it should think of nothing and know nothing except Christ alone. The law should be completely removed from sight, and the promise of Christ alone embraced. It is easy to say this, but in times of temptation, when the conscience is struggling with God, it is the hardest of all things actually to do. When the law accuses you, terrifies you, reveals to you your sin, threatens your soul with the wrath of God and eternal death, then you need strong faith in Christ, as if there had never been any law or sin, but only Christ, grace, and redemption. You need to be able to say, “Law, I will not listen to you. The time has come for me to be free, and I will not put up with your tyranny any longer.”
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