"In the second place, why do our adversaries exaggerate the obligation or effect of a vow, when, at the same time, they have not a word to say of the nature of the vow itself, that it ought to be in a thing possible, free, and chosen spontaneously and deliberately? But it is not known to what extent perpetual chastity is in the power of man. And how few are they who have taken the vow spontaneously and deliberately! Young men and maidens, before they are able to judge, are persuaded, and sometimes even compelled, to take the vow. Wherefore it is not fair to insist so rigorously on the obligation, since it is granted by all that it is against the nature of a vow to take it without spontaneous and deliberate action. . . . "But although it appears that God's command concerning marriage delivers 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 commandment of God to merit justification and grace is wicked as Christ says (Matt. 15, 9): 'In vain they worship Me with the commandments of men.' And Paul teaches everywhere that righteousness is not to be sought by 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." The confessors then proceed to show how spiritual pride was fostered by the monkish teaching of perfection, and how by their rites and ordinances and rules the true worship of God was obscured, and men were withdrawn from useful pursuits in life to be buried in cloisters. They conclude: "All these things, since they are false and empty, make vows null and void." (p. 57 ff.) Luther never had taken his own nor other monks' vows lightly. He spoke and wrote to Melanchthon from the Wartburg against the mere throwing off of the vows on the ground that they were not binding anyway. He argued the sacredness of the oath, and held that first the consciences of those bound by vows must be set free through the evangelical teaching; then, when they are qualified to make an intelligent choice on spiritual grounds, they may discard their vows. When he married Catherine, he had long become a free man in his mind. So had Catherine.