Excerpt from a Reformation sermon delivered by C. F. W. Walther in 1858.

It is true that of all the church bodies which have left the papacy, it is precisely the Lutheran Church which is accused of retaining many papal abuses and of having been the least successful in cleansing itself. It is pointed out, for example, that in our church priestly clothing, church ornamentation, pictures, altar, crucifixes, candles, confession, the sign of the cross, and the like are still apparent.

But, my friends, whoever regards these innocent things as vestiges of the papacy knows neither what the papacy is, nor what the Bible teaches. The very fact that the Lutheran Reformation was not aimed at indifferent adiaphora, but retained those things which were in harmony with God's Word, shows that it was not a disorderly revolution, but a Biblical reformation; for whatever did not agree with God's Word was unrelentingly cleansed from the church by the Lutheran Reformation even though it seemed to glow with angelic holiness.

The Lutheran Reformation, however, was complete not only in the destruction and tearing down of all the idols which had been erected in the church, but also in bringing forth its treasures and in setting up its truly sacred possessions. Luther followed not only the principle, "truth and nothing but the truth," but also the principle, "and the whole truth." Therefore, through his efforts, not only this and that truth, not just half the truth, but the whole truth of Holy Scripture was opened for the church, was used, and made the Christians' common possession. Not only did the Lutheran Reformation get all its doctrines out of the marble quarry of the written Word of God, but there is no doctrine of the Word of God which it did not place on the candlesticks of the church like a heavenly light in its purity. This includes the doctrine concerning God as well as the doctrine concerning man; the doctrine concerning the foundation of salvation as well as those concerning the means of salvation and the order of salvation; the doctrine concerning faith as well as those concerning love and hope. The whole counsel of God for man’s salvation was clearly and purely brought to the light of day out of the gold mine of Scripture, beginning with the doctrine of justification; namely, that a man is righteous before God and can be saved only by grace through faith in Christ without the merits of works. This laid the foundation on which the whole Christian doctrinal edifice rises like a holy diamond temple. In its holy of holies the New Testament mercy seat of the holy sacraments and the absolution is enthroned.

(Excerpt of C. F. W. Walther's 1858 Reformation sermon published in "The Word of His Grace: Sermon Selections, C. F. W. Walther", Lake Mills, Iowa: Graphic Publishing, 1978, pp. 50-53.)