These words the Apostle also delivers and more fully expounds in i Cor. xi [1 Cor. 11:23 ff.]. On them we must lean and build as on a firm foundation, if we would not be carried about with every wind of doctrine, even as we have hitherto been carried about by the wicked doctrines of men, who turn aside the truth [Titus 1:14]. For in these words nothing is omitted that pertains to the completeness, the use and the blessing of this sacrament; and nothing is included that is superfluous and not necessary for us to know. Whoever sets them aside and meditates or teaches concerning the mass, will teach monstrous and wicked doctrines, as they have done who made of the sacrament an opus operatum[56] and a sacrifice.
Therefore let this stand at the outset as our infallibly certain proposition,—the mass, or sacrament of the altar, is Christ's testament which He left behind Him at His death, to be distributed among His believers. For that is the meaning of His word,—"This is the chalice, the new testament in my blood." [Luke 22:20] Let this truth stand, I say, as the immovable foundation on which we shall base all that we have to say, or we are going to overthrow, as you will see, all the godless opinions of men imported into this most precious sacrament. Christ, Who is the Truth, saith truly that this is the new testament in His blood, which is shed for us. Not without reason do I dwell on this sentence; the matter is of no small moment, and must be most deeply impressed upon us.
Let us enquire, therefore, what a testament is, and we shall learn at the same time what the mass is, what its use and blessing, and what its abuse. A testament, as every one knows, is a promise made by one about to die, in which he designates his bequest and appoints his heirs. Therefore a testament involves, first, the death of the testator, and secondly, the promise of the bequest and the naming of the heir. Thus St. Paul discusses at length the nature of a testament in Romans iv, Galatians iii and iv, and Hebrews ix. The same thing is also clearly seen in these words of Christ. Christ testifies concerning His death when He says: "This is my body, which shall be given; this is my blood, which shall be shed." [Luke 22:19 f.] He designates the bequest when He says: "Unto remission of sins." And He appoints the heirs when He says: "For you, and for many"—i. e., for such as accept and believe the promise of the testator; or here it is faith that makes men heirs, as we shall see.
You see, therefore, that what we call the mass is the promise of remission of sins made to us by God; and such a promise as has been confirmed by the death of the Son of God. For the one difference between a promise and a testament is that a testament is a promise which implies the death of him who makes it. A testator is a man making a promise who is about to die; whilst he that makes a promise is, if I may so put it, a testator who is not about to die. This testament of Christ was forshadowed in all the promises of God from the beginning of the world; nay, whatever value those olden promises possessed was altogether derived from this new promise that was to come in Christ. Hence the words "covenant" and "testament of the Lord" occur so frequently in the Scriptures, which words signified that God would one day die. For where there is a testament, the death of the testator must needs follow (Hebrews ix). Now God made a testament: therefore it was necessary that He should die [Heb. 9:16]. But God could not die unless He became man. Thus both the incarnation and the death of Christ are briefly comprehended in this one word "testament."
From the above it will at once be seen what is the right and what the wrong use of the mass, what is the worthy and what the unworthy preparation for it. If the mass is a promise, as has been said, it is to be approached, not with any work or strength or merit, but with faith alone. For where there is the word of God Who makes the promise, there must be the faith of man who takes it. It is plain, therefore, that the first step in our salvation is faith, which clings to the word of the promise made by God, Who without any effort on our part, in free and unmerited mercy makes a beginning and offers us the word of His promise. For He sent His Word, and by it healed them [Ps. 107:20]. He did not accept our work and thus heal us. God's Word is the beginning of all; on it follows faith, and on faith charity; then charity works every good work, for it worketh no ill, nay, it is the fulfilling of the law [Rom. 13:10]. In no other way can man come to God and deal with Him than through faith; that is, not man, by any work of his, but God, by His promise, is the author of salvation, so that all things depend on the word of His power, and are upheld and preserved by it [Heb. 1:3], with which word He begat us, that we should be a kind of firstfruits of His creatures [Jas. 1:18].
Thus, in order to raise up Adam after the all, God gave him this promise, addressing the serpent: "I will put enmities between thee and the woman, and thy seed and her seed: she shall crush thy head, and thou shalt lie in wait for her heel." [Gen. 3:15] In this word of promise Adam, with them that were his, was carried as it were in God's bosom, and by faith in it he was preserved, patiently waiting for the woman who should crush the serpent's head, as God had promised. And in that faith and expectation he died, not knowing when or in what guise she would come, yet never doubting that she would come. For such a promise, being the truth of God, preserves, even in hell, those who believe it and wait for it. After this came another promise, made to Noah—to last until the time of Abraham—when a bow was set as a sign in the clouds [Gen. 9:12], by faith in which Noah and his descendants found a gracious God. After that He promised Abraham that all nations should be blessed in his seed [Gen. 12:3]; and this is Abraham's bosom, into which his posterity was carried [Luke 16:22]. Then to Moses and the children of Israel, and especially to David, He gave the plain promise of Christ [Deut. 18:18], thereby at last making clear what was meant by the promise to them of old time [2 Sam. 7:6]. And so it came finally to the most complete promise of the new testament, in which with plain words life and salvation are freely promised, and granted to such as believe the promise. And He distinguished this testament by a particular mark from the old, calling it the "new testament." [Luke 22:20] For the old testament, which He gave by Moses, was a promise not of remission of sins or of eternal things, but of temporal,—namely, the land of Canaan,—by which no man was renewed in his spirit, to lay hold on the heavenly inheritance. Therefore it was also necessary that dumb beasts should be slain, as types of Christ, that by their blood the testament might be confirmed; so that the testament was even as the blood, and the promise even as the sacrifice. But here He says: "The new testament in my blood" [Luke 22:20]—not in another's, but in His own, and by this blood grace is promised, through the Spirit, unto the remission of sins, that we may obtain the inheritance.
The mass, according to its substance, is, therefore, nothing else than the aforesaid words of Christ—"Take and eat" [1 Cor. 11:24]; as if He said: "Behold, O sinful man and condemned, out of pure and unmerited love wherewith I love thee, and by the will of the Father of all mercies, I promise thee in these words, or ever thou canst desire or deserve them, the forgiveness of all thy sins and life everlasting. And, that thou mayest be most certainly assured of this my irrevocable promise, I give my body and shed my blood, thus by my very death confirming this promise, and leaving thee my body and blood as a sign and memorial of this same promise. As oft, therefore, as thou partakest of them, remember me, and praise, magnify, and give thanks or my love and largess toward thee."
Herefrom you will see that nothing else is needed for a worthy holding of mass than a faith that confidently relies on this promise, believes Christ to be true in these words of His, and doubts not that these infinite blessings have been bestowed upon it. Hard on this faith there follows, of itself, a most sweet stirring of the heart, whereby the spirit of man is enlarged and waxes at—that is love, given by the Holy Spirit through faith in Christ—so that he is drawn unto Christ, that gracious and good Testator, and made quite another and a new man. Who would not shed tears of gladness, nay well-nigh faint for the joy he hath toward Christ, if he believed with unshaken faith that this inestimable promise of Christ belonged to him! How could one help loving so great a Benefactor, who offers, promises and grants, all unbidden, such great riches, and this eternal inheritance, to one unworthy and deserving of somewhat far different?
Therefore, it is our one misfortune, that we have many masses in the world, and yet none or but the fewest of us recognize, consider and receive these promises and riches that are offered, although verily we should do nothing else in the mass with greater zeal (yea, it demands all our zeal) than set before our eyes, meditate, and ponder these words, these promises of Christ, which truly are the mass itself, in order to exercise, nourish, increase, and strengthen our faith by such daily remembrance. For this is what He commands, saying, "This do in remembrance of me." [1 Cor. 11:24]
This should be done by the preachers of the Gospel, in order that this promise might be faithfully impressed upon the people and commended to them, to the awakening of faith in the same. But how many are there now who know that the mass is the promise of Christ? I will say nothing of those godless preachers of fables, who teach human traditions instead of this promise. And even if they teach these words of Christ, they do not teach them as a promise or testament, and, therefore, not to the awakening of faith.