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I. We consider THE INSTITUTION, EXTENT AND APPLICATION OF THE LAW. When God formed man upright in His own image, the moral law, which inculcates eternal, unchangeable truth and perfect goodness, was written in his heart. By the fall, the fair image of God's purity was defaced, some faint lines of distinction only of right and wrong being left upon the natural conscience. When God was about to separate to Himself the people of Israel, with a view to preserve and perpetuate in the earth the knowledge of His character and will, He gave them the law from Sinai, not now inscribed on their hearts as before, but engraven on two tables of stone. Such was the institution of the law. We proceed to its extent and application. The moral law of the ten commandments is a complete summary of all human duty to God, to each other, and to themselves. We are not to limit the commandments to their literal meaning; otherwise a great part of our thoughts, and words, and even of our actions would be exempt from the notice and control of the law of God. It has the whole Word of God for its expositor, the regulation of the whole sphere of human principle and action for its object. "The law is spiritual." It does not merely regard the outward action, it goes down into the heart and motives, and tries every thought, intention, and principle of the soul.

II. To consider HOW IT IS LAWFULLY USED.

1. We use it lawfully when we receive and respect it in its full extent, and in every part of it. There is hardly any man, however wicked, who does not feel something like reverence for some parts of God's commands. A man will coolly break and profane the Sabbath who dares not curse and swear.

2. We use the law lawfully when we bring every part of our character, the inward as well as the outward man, to the test of its requirements. An action, though apparently agreeable to the law of God, if it originate in some base, selfish, unholy motive, is in His sight an act of disobedience, a positive sin. Jehu did an action which the law required, when he rooted idolatry out of the land; but it soon appeared that his object was not the glory of God, but his own distinction and advancement. Neither was Amaziah's conduct better than splendid sin, "who did that which was right in the sight of the Lord, but not with a perfect heart."

3. We use the law lawfully when we seriously believe, and rally admit that it contains eternal and unalterable truth, that our holy God could not have given a law less holy, less extensive; that every being, in proportion as he is holy and fit for heaven, loves the law; that every transgression of it must expose us to Divine justice as guilty offenders; that the penalty of every sin is death eternal; and that till we seek mercy and forgiveness in His appointed way for each sin of our lives, the curse of the law, and the wrath of God abide upon us. All this must be true in the very nature of things.

III. THIS LAWFUL USE OF THE LAW ANSWERS GOOD ENDS, PRODUCES. HAPPY EFFECTS UPON US, WHATEVER OUR STATE AND CHARACTER MAY BE.

1. This lawful use of the law is good for the unconverted, whether a wicked or a self righteous man. When, under a serious and spiritual understanding of the law, he not only surveys his actions but enters with its light into the secret chambers of his heart, he discovers his true character in all its horrid deformities. He perceives that his heart has never felt the love of God, the principle of all true obedience. His best actions are now seen in their proper light, as needing the mercy, not claiming the reward of his holy God. He cannot be saved by works under the law, except he keep it perfectly. But if he could forget all his past sins, he finds that the law is so pure and extensive that he cannot keep it for a day. The more he tries the more he is condemned. In this awful state the gospel points his despairing eye to the Cross. "Behold the Lamb of God which taketh away the sins of the world." Thus "the law is our schoolmaster to bring us to Christ." It drives us from Sinai to Calvary. It pulls down every false foundation of hope, that we may build on Christ alone, the rock of ages.

2. After the law has brought a penitent sinner to Christ for pardon, peace, and life, it is, if lawfully used, good and useful to him as a justified believer. He is called to be holy; and the practical part of the Word of God, which is a comment upon the law, shows him at large what is sinful and what is holy. It therefore becomes a light to his feet and a lamp to his paths. To be conformed to the law is to be conformed to the image of God, and to be capable of heavenly happiness with Him.

(1) Let me entreat you, if you regard your immortal souls, diligently to read, hear, and meditate upon the Word of God at large, which explains the law and will of God by precept, and illustrates them by example.

(2) Let your hearing and study of the Word of Life be ever accompanied with earnest humble prayer to God, for the powerful aid of His grace to give you a spiritual taste and judgment to dispel your ignorance, to guide you into all truth, and to fasten it with power on your hearts.

(3) In considering the* several parts of the law of God your object should be to comprehend its full bearing, extent, and meaning. In order to succeed you cannot take a better model than our Saviour's view and explanation of a part of the law in His sermon on the mount.

(J. Graham.)

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KJV: But we know that the law is good, if a man use it lawfully;

WEB: But we know that the law is good, if a man uses it lawfully,