Complete Sermon - Trinity 18 - The Two Greatest Commandments - Christ Is David's Son And David's Lord
4. As if the Lord would say: He who possesses love to God, and love to his neighbor, has all things, and therefore fulfills the law; for the whole law and all the prophets point to these two themes, namely: how God and our neighbor are to be loved.
5. Now one may wish to ask: How can you harmonize this statement, that all things are to be comprehended in these two commandments, since there was given to the Jews circumcision and many other commandments? To answer this, let us see in the first place how Christ explains the law, namely, that it must be kept with the heart. In other words, the law must be spiritually comprehended; for he who does not lay hold of the law with the heart and with the Spirit, will certainly not fulfill it. Therefore the Lord here gives to the lawyer the ground and real substance of the law, and says that these are the greatest commandments, to love God with the heart and our neighbor as ourselves.
From this it follows that he, who is not circumcised, who does not fast nor pray, is not doing it from the heart; even though he may perform external acts, he nevertheless does nothing before God, for God looketh on the heart, and not on our acts, 1 Samuel 16:7. It will not profit a man at all, no matter what work he may perform, if his heart is not in it.
6. From this arises another question: Since works are of no profit to a man, why then did God give so many commandments to the Jews? To this I answer, these commandments were given to the end that we might become conscious whether we really love God with all our heart, and with all our soul, and with all our strength, and in addition our neighbor as ourselves; for St. Paul says in Romans 7:7 (3:20), that the law is nothing but a consciousness and a revelation of sin. What would I know of sin, if there were no law to reveal it to me?
Here now is the law that saith: Thou shalt love God with thy heart, and thy neighbor as thyself. This we fulfill if we do all that the law requires; but we are not doing it. Hence he shows us where we are lacking, and that, while we ought really to do something, we are doing nothing.
7. That the Jews had to practice circumcision was indeed a foolish ceremony, yea, a command offensive to reason, even though it were given by God still to-day. What service was it to God, to burden his people with this grievous commandment? What good was it to him, or what service to a neighbor? Yea, and it did not profit the Jew, who was circumcised. Why then did God give the command? In order that this commandment and law might show them whether they really loved God with all their heart, with all their soul, and with all their mind, and whether they did it willingly or not. For if there were a devout heart, it would say: I verily do not know why God gave me circumcision, inasmuch as it does not profit any one, neither God, nor me, nor my neighbor; but since it is well pleasing to God, I will nevertheless do it, even though it be considered a trifling and despised act. Hence, circumcision was an exercise of the commandment, Thou shalt love God with all thy heart.
8. It was also a foolish command God gave to Abraham, to slay his son, Genesis 22:2. For if reason had been the judge in this, both it and all mankind would have come to no other conclusion than this: It is an unfriendly and hostile command, how can it be from God, since God himself said to Abraham that he would multiply his seed through this son, and it would become as innumerable as the stars of the firmament and as the sand by the sea. Therefore it was a foolish commandment, a grievous, hard and unbearable commandment. But what did Abraham do? He closes his senses, takes his reason captive, and obeys the voice of God, goes, and does as God commanded him.
By this he proved that he obeyed from the heart; otherwise, even if he had put his son to death a hundred times, God would not have cared for it; but God was pleased that the deed came from his heart and was done in true love to God; yea, it came from a heart that must have thought: Even if my son dies, God is almighty and faithful, he will keep his word, he will find ways and means beyond that which I am able to devise; only obey, there is no danger. Had he not had this boldness and this faith, how could his fatherheart have killed his only and well beloved son?
