25. We should, therefore, give careful heed to this word "sacrifice," that we do not presume to give God something in the sacrament, when it is He who therein gives us all things. We should bring spiritual sacrifices, since the external sacrifices have ceased and have been changed into the gifts to churches, monastic houses and charitable institutions. What sacrifices then are we to offer? Ourselves, and all that we have, with constant prayer, as we say: "Thy will be done on earth as in heaven." [Matt. 6:10] Whereby we are to yield ourselves to the will of God, that He may do with us what He will, according to His own pleasure; in addition, we are to offer Him praise and thanksgiving with our whole heart, for His unspeakable, sweet grace and mercy, which He has promised and given us in this sacrament. And although such a sacrifice occurs apart from the mass, and should so occur, for it does not necessarily and essentially belong to the mass, as has been said,[20] yet it is more precious, more seemly, more mighty and also more acceptable when it takes place with the multitude and in the assembly where men provoke, move and inflame one another to press close to God, and thereby attain without all doubt what they desire. For so has Christ promised; where two are gathered together in His name there He is in the midst of them, and where two agree on earth as touching anything that they shall ask, all shall be done that they ask. [Matt. 18:19, 20] How much more shall they obtain what they ask, when a whole city comes together to praise God and to pray with one accord! We would not need many indulgence-letters if we proceeded aright in this matter. Souls also would easily be redeemed from purgatory and innumerable blessings would follow. But, alas! that is not the way it goes. Everything is reversed; what the mass is intended to do, we take upon us and want to do ourselves; what we ought to do we give over to the mass. All this is the work of unlearned, false preachers. 26. To be sure, this sacrifice of prayer, praise and thanksgiving, and of ourselves, we are not to present before God in our own person, but we are to lay it on Christ and let Him present it, as St. Paul teaches in Hebrews xiii: "Let us offer the sacrifice of praise to God continually, that is, the fruit of the lips which confess Him and praise Him," [Heb. 13:15] and all this through Christ. For He is also a priest, as Psalm cx says: "Thou art a priest forever after the order of Melchizedek" [Ps. 110:4]; because He intercedes for us in heaven, receives our prayer and sacrifice, and through Himself, as a godly priest, makes them pleasing to God [Heb. 5:6, 10, etc.], as St. Paul says again in Hebrews ix: "He is ascended into Heaven to be a mediator in the presence of God for us" [Heb. 9:24]; and: "It is Christ Jesus that died, yea, rather, that is risen again, Who is even at the right hand of God, Who also maketh intercession for us." [Rom. 8:34]