40. Thus we see with how very few laws and works Christ has weighed down His holy Church, and with how many promises He has lifted it up to faith; although now, alas! all is turned about, and we are driven by many long and burdensome laws and works to become pious; and nothing comes of it. But Christ's burden is light [Matt. 11:30] and soon produces an abundant piety, which consists in faith and trust, and fulfils what Isaiah says: "A little perfection shall bring a flood full of all piety." [Isa. 10:32 (Vulgate)] That burden is faith, which is a little thing, to which belong neither laws nor works, nay it cuts off all laws and works and fulfils all laws and works. Therefore there flows from it nothing but righteousness. For so perfect is faith, that without any other labor and law, it makes everything that man does acceptable and well-pleasing to God. As I have further said of it in my little book "Of Good Works." [37]
Therefore, let us beware of sins, but much more of laws and good works, and only give heed to the divine promise and to faith; then good works will come of themselves. To this may God help us. Amen.
FOOTNOTES
[1] See above, p. 25, note 1.
[2] Luther's customary term for the law of the Church, or "Canon Law."
[3] For the application of this principle to the sacrament of penance, see the Discussion of Confession above, p. 82 f.
[4] Luther quotes from the Vulgate, St. Jerome's Latin version of the Bible.
[5] The bread of the Lord's Supper.
[6] The Sanctus in the mass.
[7] Luther says "feathers."