From the Word
So that the law was our custodian until Christ came, that we might be justified by faith.
Galatians 3:24, RSV
There are two divine proclamations which came from heaven. One is, “Thou shalt not kill, commit adultery, steal” and the like, and adds the threat that all who transgress these commandments shall die. Though they may compel a man outwardly to appear godly before men, inwardly the heart is left at enmity with the law. The other proclamation is that of the gospel. It tells us how we may meet the demands of the law. It does not drive nor threaten, but kindly invites us, Come, I will show you where you may find what you need to make you godly. Here is the Lord Jesus; he will give it you.
The two proclamations are as opposite to one another as taking and giving, and this distinction must ever be observed. With these two God has ever ruled the world, and still rules it. The law must be declared to coarse and rude persons, who are not influenced by the gospel, until they are driven to acknowledge their imperfections and are humbled. When this has been accomplished, the gospel is to be applied. There are other proclamations besides these two, which have been invented to frighten men’s consciences, but they are not from heaven and are mere human prattle. The proclamations of law and gospel are not of men, but of Christ, who sent them forth and put them into the heart of the apostles and their successors so that they understood them, and then into their mouths so that they spake and declared them.
If you believe that Christ died to save you from all evil, and you hold fast to that Word, you will find it so certain and sure that no creature can overthrow it. It is the power of God, and can and will save all who believe it. You will find refuge in the Word and attain everlasting, peace, joy and life. You will be a participant in all the power that is in the Word, which is so deeply hidden that none but they who believe realize that it is so effective and that it accomplishes such great things.
Luther, Martin, and John Sander. Devotional Readings from Luther’s Works for Every Day of the Year. Augustana Book Concern, 1915, pp. 158–59.