The bodily rest is that of which we have spoken above, namely, that we omit our business and work, in order that we may gather in the church, see mass, hear God's Word and make common prayer. This rest is indeed bodily and in Christendom no longer commanded by God, as the Apostle says, Colossians ii, "Let no man obligate you to any holiday whatever"--for they were of old a figure, but now the truth has been fulfilled, so that all days are holy days, as Isaiah says, chapter lxvi, "One holy day shall follow the other"; on the other hand, all days are workdays. Yet it is a necessity and ordained by the Church for the sake of the imperfect laity and working people, that they also may be able to come to hear God's Word. For, as we see, the priests and clergy celebrate mass every day, pray at all hours and train themselves in God's Word by study, reading and hearing. For this reason also they are freed from work before others, supported by tithes and have holy-day every day, and every day do the works of the holy-day, and have no work-day, but for them one day is as the other. And if we were all perfect, and knew the Gospel, we might work every day if we wished, or rest if we could. For a day of rest is at present not necessary nor commanded except only for the teaching of God's Word and prayer. The spiritual rest, which God particularly intends in this Commandment, is this: that we not only cease from our labor and trade, but much more, that we let God alone work in us and that we do nothing of our own with all our powers. But how is this done? In this way: Man, corrupted by sin, has much wicked love and inclination toward all sins, as the Scriptures say, Genesis viii, "Man's heart and senses incline always to the evil," that is, to pride, disobedience, anger, hatred, covetousness, unchastity, etc., and summa summarum, in all that he does and leaves undone, he seeks his own profit, will and honor rather than God's and his neighbor's. Therefore all his works, all his words, all his thoughts, all his life are evil and not godly. Now if God is to work and to live in him, all this vice and wickedness must be choked and up-rooted, so that there may be rest and a cessation of all our works, thoughts and life, and that henceforth (as St. Paul says, Galatians ii.) it may be no longer we who live, but Christ Who lives, works and speaks in us. This is not accomplished with comfortable, pleasant days, but here we must hurt our nature and let it be hurt. Here begins the strife between the spirit and the flesh; here the spirit resists anger, lust, pride, while the flesh wants to be in pleasure, honor and comfort. Of this St. Paul says, Galatians v, "They that are our Lord Christ's have crucified the flesh with its affections and lusts." Then follow the good works,--fasting, watching, labor, of which some say and write so much, although they know neither the source nor the purpose of these good works. Therefore we will now also speak of them.