Complete Sermon - Trinity 18 - The Two Greatest Commandments - Christ Is David's Son And David's Lord
17. Do you want to do something pleasing to God, then do it out of genuine love. That the Jews practiced circumcision, fasted much, prayed much, and performed other like services, was not pleasing to God, for it did not come from the heart, as this commandment requires: Thou shalt love God with all thy heart. Thus it will be also with you, even though you should belong to the Carthusian friars, or to a still more exacting order; all would avail nothing, if you had not the love of God. From this you are to conclude, all works are nothing, that do not originate in love, or are against love. No commandments should be in force, except those in which the law of love can be exercised.
18. From this it now appears what a misleading calling that of the monks and priests is, in that they wish to merit heaven through their works alone, and they also bind the people to do good works, in order that they may thereby merit heaven, which is a cursed and godless service. Hence, as already stated, the law is to be only an exercise to prove our love; otherwise, aside from love, God never inquires about works, no matter how excellent they are.
19. You can now see how many people know what the law means: Thou shalt love the Lord thy God with all thy heart, and thy neighbor as thyself.
Surely they are few who know it, and fewer still who keep it. How can they keep that which they do not know? We are blind and our nature is totally blind, and so is also human reason. It knows nothing so imperfectly as that which the law of God requires.
20. Now here Christ shows the Pharisees and the Scribes a twofold kindness. In the first place, he dispels their blindness and teaches them what the law is. In the second place, he teaches them how impossible it is for them to keep the law. Their blindness he dispels, in that he teaches them what the law is, namely: that love is the law. Human reason cannot comprehend this nowadays any more than the Jews did then, for if it had been possible for human reason to comprehend it, the Pharisees and Scribes, who at that time were the best and wisest of the people, could have understood it; but they thought it consisted alone in performing the external works of the law; in giving to God, whether it be done willingly or unwillingly; but their inward blindness, their covetousness, and their hardened heart they could not see, and thought they thoroughly understood the law and were fine fellows, holy and pious people; but they stood in their own light. For no one is able to keep the law unless his nature is thoroughly renewed.
