But although it appears that God's command concerning marriage delivers very many from their vows, yet our teachers introduce also another argument concerning vows to show that they are void. For every service of God, ordained and chosen of men without the commandment of God to merit justification and grace, is wicked, as Christ says Matt. 16, 9: In vain do they worship Me with the commandments of men. And Paul teaches everywhere that righteousness is not to be sought from our own observances and acts of worship, devised by men, but that it comes by faith to those who believe that they are received by God into grace for Christ's sake. But it is evident that monks have taught that services of man's making satisfy for sins and merit grace and justification. What else is this than to detract from the glory of Christ and to obscure and deny the righteousness of faith? It follows, therefore, that the vows thus commonly taken have been wicked services, and, consequently, are void. For a wicked vow, taken against the commandment of God, is not valid; for (as the Canon says) no vow ought to bind men to wickedness. Paul says, Gal. 5, 4: Christ is become of no effect unto you, whosoever of you are justified by the Law, ye are fallen from grace. To those, therefore, who want to be justified by their vows Christ is made of no effect, and they fall from grace. For also these who ascribe justification to vows ascribe to their own works that which properly belongs to the glory of Christ. Nor can it be denied, indeed, that the monks have taught that, by their vows and observances, they were justified, and merited forgiveness of sins, yea, they invented still greater absurdities, saying that they could give others a share in their works. If any one should be inclined to enlarge on these things with evil intent, how many things could he bring together whereof even the monks are now ashamed! Over and above this, they persuaded men that services of man's making were a state of Christian perfection. And is not this assigning justification to works? It is no light offense in the Church to set forth to the people a service devised by men, without the commandment of God, and to teach that such service justifies men. For the righteousness of faith, which chiefly ought to be taught in the Church, is obscured when these wonderful angelic forms of worship, with their show of poverty, humility, and celibacy, are east before the eyes of men.