We know that Paul has reference to the time of Christ's coming. It was then that faith and the object of faith were fully revealed. But we may apply the historical fact to our inner life. When Christ came He abolished the Law and brought liberty and life to light. This He continues to do in the hearts of the believers. The Christian has a body in whose members, as Paul says, sin dwells and wars. I take sin to mean not only the deed but root, tree, fruit, and all. A Christian may perhaps not fall into the gross sins of murder, adultery, theft, but he is not free from impatience, complaints, hatreds, and blasphemy of God. As carnal lust is strong in a young man, in a man of full age the desire for glory, and in an old man covetousness, so impatience, doubt, and hatred of God often prevail in the hearts of sincere Christians. Examples of these sins may be garnered from the Psalms, Job, Jeremiah, and all the Sacred Scriptures.
Accordingly each Christian continues to experience in his heart times of the Law and times of the Gospel. The times of the Law are discernible by heaviness of heart, by a lively sense of sin, and a feeling of despair brought on by the Law. These periods of the Law will come again and again as long as we live. To mention my own case. There are many times when I find fault with God and am impatient with Him. The wrath and the judgment of God displease me, my wrath and impatience displease Him. Then is the season of the Law, when "the flesh lusteth against the Spirit, and the Spirit against the flesh."
The time of grace returns when the heart is enlivened by the promise of God's mercy. It soliloquizes: "Why art thou cast down, O my soul? and why art thou disquieted within me? Can you see nothing but law, sin, death, and hell? Is there no grace, no forgiveness, no joy, peace, life, heaven, no Christ and God? Trouble me no more, my soul. Hope in God who has not spared His own dear Son but has given Him into death for thy sins." When the Law carries things too far, say: "Mister Law, you are not the whole show. There are other and better things than you. They tell me to trust in the Lord."
There is a time for the Law and a time for grace. Let us study to be good timekeepers. It is not easy. Law and grace may be miles apart in essence, but in the heart, they are pretty close together. In the heart fear and trust, sin and grace, Law and Gospel cross paths continually.
Whether reason hears that justification before God is obtained by grace alone, it draws the inference that the Law is without value. The doctrine of the Law must therefore be studied carefully lest we either reject the Law altogether, or are tempted to attribute to the Law a capacity to save.
There are three ways in which the Law may be abused. First, by the self-righteous hypocrites who fancy that they can be justified by the Law. Secondly, by those who claim that Christian liberty exempts a Christian from the observance of the Law. "These," says Peter, "use their liberty for a cloak of maliciousness," and bring the name and the Gospel of Christ into ill repute. Thirdly, the Law is abused by those who do not understand that the Law is meant to drive us to Christ. When the Law is properly used its value cannot be too highly appraised. It will take me to Christ every time.
VERSE 24. Wherefore the law was our schoolmaster to bring us unto Christ.
This simile of the schoolmaster is striking. Schoolmasters are indispensable. But show me a pupil who loves his schoolmaster. How little love is lost upon them the Jews showed by their attitude toward Moses. They would have been glad to stone Moses to death. (Ex. 17:4.) You cannot expect anything else. How can a pupil love a teacher who frustrates his desires? And if the pupil disobeys, the schoolmaster whips him, and the pupil has to like it and even kiss the rod with which he was beaten. Do you think the schoolboy feels good about it? As soon as the teacher turns his back, the pupil breaks the rod and throws it into the fire. And if he were stronger than the teacher he would not take the beatings, but beat up the teacher. All the same, teachers are indispensable, otherwise the children would grow up without discipline, instruction, and training.
But how long are the scolding and the whippings of the schoolmaster to continue? Only for a time, until the boy has been trained to be a worthy heir of his father. No father wants his son to be whipped all the time. The discipline is to last until the boy has been trained to be his father's worthy successor.
The Law is such a schoolmaster. Not for always, but until we have been brought to Christ. The Law is not just another schoolmaster. The Law is a specialist to bring us to Christ. What would you think of a schoolmaster who could only torment and beat a child? Yet of such schoolmasters there were plenty in former times, regular bruisers. The Law is not that kind of a schoolmaster. It is not to torment us always. With its lashings it is only too anxious to drive us to Christ. The Law is like the good schoolmaster who trains his children to find pleasure in doing things they formerly detested.