18. See to it that you exercise and strengthen your faith, so that when you are sorrowful or your sins afflict you and you go to the sacrament or hear mass, you do so with a hearty desire for this sacrament and for what it means, and doubt not that you have what the sacrament signifies, that is, that you are certain Christ and all His saints come to you bringing all their virtues, sufferings and mercies, to live, work, suffer and die with you, and be wholly yours, to have all things in common with you. If you will exercise and strengthen this faith, you will experience what a rich and joyous wedding-supper and festival your God has prepared upon the altar or you. Then you will understand what the great feast of King Ahasuerus signifies [Esth. 1:5], you will see what that wedding is for which God has slain His oxen and fatlings, as it is written in the Gospel [Matt. 22:2 ff.], and your heart will grow right free and confident, strong and courageous, against all enemies. For who will fear any calamity if he is sure that Christ and all His saints are with Him and share all things, evil or good, in common with him? So we read that the disciples of Christ broke this bread and ate with great gladness of heart. Since, then, this work is so great that our insignificant souls dare not desire it, to say nothing of hoping for or expecting it, it is necessary and profitable to go often to the sacrament, or at least in the daily mass to exercise and strengthen this faith, on which all depends and or the sake of which it was instituted. For if you doubt[20] you do God the greatest dishonor and regard Him as unfaithful and a liar. If you cannot believe, pray for faith, as was said above in the other treatise[21]. 19. See to it also that you make yourself a fellow of every man and by no means exclude any one in hatred or anger; for this sacrament of fellowship, love and unity cannot tolerate discord and dissension. You must let the infirmities and needs of others burden your heart, as though they were your own, and offer them your strength, as though it were their own, as Christ does for you in the sacrament. That is what we mean by being changed into one another through love, out of many particles becoming one bread and drink, giving up one's own form and taking one that belongs to all.[22]