When we think of the law of God, the first thing that should come to mind is love—God’s love for us as fallen sinners, directing us to love Him, enjoy Him, and glorify Him. God’s law is a gracious gift to us, and it has three primary uses. First, the law functions as a teacher by showing us God’s perfect righteousness and our unrighteousness and sin, and it shows our danger of God’s judgment, leading us, by God’s grace, in repentance and faith to Jesus Christ who fulfilled all the righteous demands of God’s law (Rom. 3:20; 4:15; Gal. 3:19–24). Second, the law functions to restrain evil in all realms of society, preserving humanity and, thus, serving God’s overall plan of redemption for His covenant people (Deut. 19:16–21; 1 Tim. 1:8–11). Third, the law functions as a guide to righteous living for all men, and it directs us as God’s beloved children by teaching us what pleases our heavenly Father and fulfills the law of Christ (1 Cor. 9:21; 1 Thess. 4:1–8).
In the Sermon on the Mount, Jesus said, “Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them” (Matt. 5:17). Jesus Christ fulfilled the law, and in fulfilling it, He set us free to love the law, to delight in keeping the law, and to repent for our lawbreaking as we live by faith in Christ for the Glory of God in all that we do (Rom. 3:31; Titus 2:11–14; 1 John 2:3–4). Even in the Great Commission, Christ commanded that we make disciples of all nations, baptizing them and teaching them to observe (“to keep” or “to obey”) all that He commanded. And to His disciples Jesus said, “If you love me, you will keep my commandments” (John 14:15), promising to send the Holy Spirit to indwell us, help us, comfort us, and sustain us.