But there is yet another stumbling-block that must be removed, and this is much greater and the most dangerous of all. It is the common belief that the mass is a sacrifice, which is offered to God. Even the words of the canon[71] tend in this direction, when they speak of "these gifts," "these offerings," "this holy sacrifice," and farther on, of "this oblation." Prayer also is made, in so many words, "that the sacrifice may be accepted even as the sacrifice of Abel," etc., and hence Christ is termed the "Sacrifice of the altar." In addition to this there are the sayings of the holy Fathers, the great number of examples, and the constant usage and custom of all the world. To all of this, firmly entrenched as it is, we must resolutely oppose the words and example of Christ. For unless we hold fast to the truth, that the mass is the promise or testament of Christ, as the words clearly say, we shall lose the whole Gospel and all our comfort. Let us permit nothing to prevail against these words, even though an angel from heaven should teach otherwise [Gal. 1:8]. For there is nothing said in them of a work or a sacrifice. Moreover, we have also the example of Christ on our side. For at the Last Supper, when He instituted this sacrament and established this testament, Christ did not offer Himself to God the Father, nor did He perform a good work on behalf of others, but He set this testament before each of them that sat at table with Him and offered him the sign. Now, the more closely our mass resembles that first mass of all, which Christ performed at the Last Supper, the more Christian will it be. But Christ's mass was most simple, without the pageantry of vestments, genuflections, chants and other ceremonies. Indeed, if it were necessary to offer the mass as a sacrifice, then Christ's institution of it was not complete.