The Word of God Absolutely Pure and Unadulterated
Let us, therefore, bless all the faithful champions who have fought for every point of Christian doctrine, unconcerned about the favor of men and disregarding their threatenings. Their ignominy, though it often was great, has not been borne in vain. Men cursed them, but they continued bearing their testimony until death, and now they wear the crown of glory and enjoy the blissful communion of Christ and of all the angels and the elect. Their labor and their fierce battling has not been in vain; for even now…the Church is reaping what they sowed.
Let us, then, my friends, likewise hold fast the treasure of the pure doctrine. Do not consider it strange if on that account you must bear reproach the same as they did. Consider that the word of Sirach, chap. 4, 33: “Even unto death fight for justice, and God will overthrow thy enemies for thee,” will come true in our case too. Let this be your slogan: Fight unto death in behalf of the truth, and the Lord will fight for you!—
We now take up a thesis for study which tells us that, since the two doctrines of Scripture, Law and Gospel, are so different from each other, we must keep them distinct also in our preaching.
Only he is an orthodox teacher who not only presents all the articles of faith in accordance with Scripture, but also rightly distinguishes from each other the Law and the Gospel.
This thesis divides into two parts. The first part states a requisite of an orthodox teacher, viz., that he must present all the articles of faith in accordance with Scripture. This, in our day, is regarded as an unheard-of demand. Even in circles of so-called believers, people act as if they were shocked when they hear some one say: “I have found the truth; I am certain concerning every doctrine of revelation.” Such a claim is considered a piece of arrogance…
Scripture requires that we have the Word of God absolutely pure and unadulterated and that we be able to say when coming down from the pulpit: “I could take an oath upon it that I have rightly preached the Word of God. Even to an angel coming down from heaven I could say: My preaching has been correct.” That explains the paradox [sic] remark of Luther that a preacher must not pray the Lord’s Prayer when coming down from the pulpit, but that he should do so before the sermon. For an orthodox preacher need not pray after delivering his sermon: “Forgive me my trespasses,” since he can say: “I have proclaimed the pure truth.” In our day, men have become merged in skepticism to such an extent that they regard any one who sets up the aforementioned claim as a semilunatic.
The Word of God tells us in a passage where the Lord is introduced as speaking, Jer. 23, 28: He that hath My Word, let him speak My Word faithfully. What is the chaff to the wheat? Saith the Lord. Our sermons, then, are to contain only wheat and no chaff.
The Apostle Paul warns the Galatians, chap. 5, 9: A little leaven leaveneth the whole lump. He means to say: A single false teaching vitiates the entire doctrine.
The warning with which John concludes the last book of the Bible is sounded as far back as in the days of Moses, who says, Deut. 4, 2: Ye shall not add unto the Word which I command you, neither shall ye diminish aught from it.
It is, then, a diabolical teaching to say: “you will never achieve the ability to give a Scriptural presentation of the articles of faith.” Especially when students hear a statement like this, it is as if some hellish poison were injected into their hearts; for after that they will no longer show any zeal to get to the bottom of the truth, to have clear conceptions of the truth.
C. F. W. Walther, The Proper Distinction Between Law and Gospel, pp. 29-31.