"Just as true doctrine is the greatest gift we can enjoy, so false doctrine is the most baneful evil that can beset us. False doctrine is sin, it is the invention of Satan, and it imperils and destroys salvation. False doctrine is every teaching contrary to the Word of God. Scripture enjoins upon us to proclaim only the truth."
W. A. Baepler, "Doctrine, True and False," The Abiding Word, ed., Theodore Laetsch, St. Louis: Concordia Publishing House, 1946, II, p. 501.
"No false dogma has ever been spread in the church which was not put forth with some plausible show, for sheep's clothing is the show of false religion (says Chrysostom). Indeed, the weaker and more ruinous the cause is, the more arguments it needs, sought everywhere and in every way possible, as though to cover it over with paint or to swathe it with medicine. For Pindar [famous Greek lyric poet, 518-438 B.C.] says, 'For a just cause three words are sufficient.' Therefore the papalists have gathered very many and varied arguements in order to establish purgatory."
Martin Chemnitz, Examination of the Council of Trent, trans., Fred Kramer, St. Louis: Concordia Publishing House, 1986, III, p. 325.
"Paul calls all false spirits bold and proud. Yes, in their filth with their protectors they are proud and impudent, otherwise they are the most cowardly villains that can be found. When they are to appear and answer for their conduct, they produce a single answer. Among themselves they are bold, and venture to catch God in His own Word; but when it comes to the test, they simply despair."
Sermons of Martin Luther, 1983, V, p. 204.
"For every sect has always had one or more particular hobbies and articles which are manifestly wrong and can easily be discerned to be of the devil, who publicly teach, urge and defend them as right certain and necessary to believe or to keep For the spirit of lies cannot so conceal himself, but that he must at last put forth his claws, by which you can discern and observe the ravenous wolf."
Sermons of Martin Luther, IV, p. 282f.
"For this reason one should not be too credulous when a preacher comes softly like an angel of God, recommends himself very highly, and swears that his sole aim is to save souls, and says: 'Pax vobis!' For those are the very fellows the devil employs to honey people's mouths. Through them he gains an entrance to preach and to teach, in order that he may afterward inflict his injuries, and that though he accomplish nothing more for the present, he may, at least, confound the people's consciences and finally lead them into misery and despair."
Sermons of Martin Luther, II, p. 322.
"It is not enough that we preach correctly, which the hireling can also do; but we must watch over the sheep, that the wolves, false teachers, may not break in, and we must contend for the sheep against the wolves, with the Word of God, even to the sacrifice of our lives. Such are good shepherds, of whom few are found."
Sermons of Martin Luthe,r III, p. 34.
"There are other wolves, however, who come to us in sheep's clothing. They are the false prophets, who under the form of pious and religious instruction feed pure poison to the sheep of Christ. Against these Christ warns us, that we may be constantly on our guard, lest with sugar-coated words and flattering religious expressions they mislead us, deceive us, by their cunning, and draw us to themselves, as He says in Matthew 7:15: 'Beware of false prophets, who come to you in sheep's clothing, but inwardly are ravening wolves.'"
Sermons of Martin Luther, III, p. 35.
"The world desires such wolf preaching, and is not worthy of anything better since it will not hear nor respect Christ. Hence it is that there are so few true Christians and faithful preachers, always outnumbered by the members of the false church."
Sermons of Martin Luther, III, p. 385.
"For nothing can feed or give life to the soul, which is not the doctrine of Christ. Although the hireling does not himself slay and destroy he does not restrain the wolf. Therefore, because you neither point out nor teach this shepherd, you shall not and ought not to be heard, but you shall be shunned as a wolf."
Sermons of Martin Luther, III, p. 58f.
"Thus too, if our confidence is to begin, and we become strengthened and comforted, we must well learn the voice of our Shepherd, and let all other voices go, who only lead us astray, and chase and drive us hither and thither. We must hear and grasp only that article which presents Christ to us in the most friendly and comforting manner possible. So that we can say with all confidence: My Lord Jesus Christ is truly the only Shepherd, and I, alas, the lost sheep, which has strayed into the wilderness, and I am anxious and fearful, and would gladly be good, and have a gracious God and peace of conscience, but here I am told that He is as anxious for me as I am for Him."
Sermons of Martin Luther, IV, p. 86.
"No work is so evil that it can damn a man, and no work is so good that it can save a man; but faith alone saves us, and unbelief damns us. The fact that someone falls into adultery does not damn him. Rather the adultery indicates that he has fallen from faith. This damns him; otherwise adultery would be impossible for him. So, then, nothing makes a good tree except faith."
What Luther Says, An Anthology, St. Louis: Concordia Publishing House, 1959, I, p. 475. Matthew 7:15-23.
"They [the false teachers] fared like a man who looks through a colored glass. Put before such a man whatever color you please, he sees no other color than that of the glass. The fault is not that the right color is not put before him but that his glass is colored differently, as the word of Is. 6:9 puts it: You will see, he says, and yet you will not see it."
Martin Luther, What Luther Says, 1959, II, p. 644.
"You cannot of a truth be for true doctrine without being unalterably opposed to false doctrine. There can be no 'positive theology' where the God-given negatives have been eliminated from the Decalog."
Norman A. Madson, Preaching to Preachers, Mankato: Lutheran Synod Book Company, 1952 Preface.
"Every departure from God's Word, every error, is dangerous to the soul. There is a fearful, diabolical power in error; for every error is the devil's work, and through fellowship with error a person puts himself under the influence of the devil. Here human reason is helpless."
Francis Pieper, The Difference between Orthodox and Heterodox Churches, and Supplement, Coos Bay, Oregon: St. Paul's Lutheran Church, 1981, p. 42.
"Even the history of the world shows how great is the power of the devil's kingdom. The world is full of blasphemies against God and of wicked opinions, and the devil keeps entangled in these bands those who are wise and righteous [many hypocrites who appear holy] in the sight of the world. In other persons grosser vices manifest themselves. But since Christ was given to us to remove both these sins and these punishments, and to destroy the kingdom of the devil, sin and death,it will not be possible to recognize the benefits of Christ unless we understand our evils. For this reason our preachers have diligently taught concerning these subjects, and have delivered nothing that is new, but have set forth Holy Scriptures and the judgments of the holy Fathers."
Apology Augsburg Confession, Article II: Of Original Sin, Concordia Triglotta, St. Louis: Concordia Publishing House, 1921, p. 119. Tappert, p.