At this time Luther preached discourses on the Ten Commandments, which have come down to us under the name of Popular Declamations. Undoubtedly there are errors in them; for Luther himself was enlightened only by degrees. "The path of the just is like the shining light, which shineth more and more unto the perfect day." But in these discourses what truth! what simplicity! what eloquence! How easy to conceive the effect which the new preacher must have produced upon his audience and his age! We will quote only one passage taken from the commencement.

Luther goes up into the pulpit of Wittemberg, and gives out these words, "Thou shalt have no other god before me." Then addressing himself to the people who filled the church, he says, "All the sons of Adam are idolaters, and guilty of violating this First Commandment."[243] This strange assertion no doubt surprises his hearers. He must therefore justify it, and accordingly proceeds:—"There are two kinds of idolatry, the one without, the other within.

"The one without is, when man worships wood and stone, beasts and stars.

"The one within is, when man, fearing punishment or seeking his ease, does not give worship to the creature, but loves it internally, and confides in it.

"What religion is this? You do not bend the knee before riches and honours, but you offer them your heart, the noblest part of you. Ah! you worship God with the body, and with the spirit you worship the creature.

"This idolatry reigns in every man until he is cured of it freely by the faith which is in Jesus Christ.

"And how is this cure performed?

"In this way. Faith in Christ strips you of all confidence in your own wisdom, your own righteousness, your own strength. It tells you that if Christ had not died for you, and so saved you, neither yourself nor any creature could have done it.[244] Then you learn to despise all those things which remained useless to you.

"There now remains to you only Jesus; Jesus alone; Jesus fully sufficient for your soul. No longer having any hopes in the creatures, you have now Christ only, in whom you hope all, and whom you love above all. Now Jesus is the sole, the only, the true God. When you have him for God you have no longer other gods."[245]

It is thus Luther shows how, by the gospel, the soul is brought back to God its sovereign good, agreeably to the words of Jesus Christ, "I am the way; no man cometh unto the Father but by me." The man who speaks thus to his age is not merely desirous to overthrow some abuses; he is first of all desirous to establish true religion. His work is not negative merely—it is primarily positive.