Not only does He Himself do homage to the law, but takes order that His followers shall do the same. It is no parting compliment that He pays the old covenant. It is to be kept up both in the doing and in the teaching, from generation to generation, even in its least commandments. Not that there is to be such insistence on very small matters as to exclude altogether from the kingdom of heaven those who do not press every jot and tittle; but that these will be reckoned of such importance, that those who are lax in doctrine and practice in regard to them must be counted among the least in the kingdom; while those who destroy nothing, but seek to fulfil everything, will be the great ones. What a foundation is laid here for reverence of all that is contained in the law and the prophets! And has it not been found that even in the very smallest features of the old covenant, even in the details of the tabernacle worship, for example, there is for the devout and intelligent Christian a treasury of valuable suggestion? Only we must beware of putting jots and tittles in the place that belongs to the weightier matters of the law, of which we have warnings sufficient in the conduct of the scribes and Pharisees. Their righteousness had the appearance of extending to the minutest matters; but, large as it seemed in popular eyes, it was not nearly large enough; and accordingly, in closing this general definition of His relation to the old covenant, our Lord had to interpose this solemn warning: "I say unto you, that except your righteousness shall exceed the righteousness of the scribes and Pharisees, ye shall in no case enter the kingdom of heaven." Theirs was a righteousness as it were of the tips of the fingers, whereas He must have "the whole body full of light"; theirs was a righteousness that tithed mint and anise and cummin, and neglected judgment, mercy and faith; theirs was in the narrow sphere of the letter, that which He demanded must be in the large and lofty region of the Spirit.
2. _Illustrations from the Moral Law_ (vv. 21-48).
The selection of illustrative instances is made with consummate skill. Our Lord, avoiding that which is specially Jewish in its interest, treats of matters that are of world-wide importance. He deals with the broadest principles of righteousness as adapted to the universal conscience of mankind, starting at the lowest point of mere earthly morality and rising to the very highest development of Christian character, thus leading up to the magnificent conclusion: "Be ye therefore perfect, even as your Father which is in heaven is perfect."
He begins with the crime which the natural conscience most strongly and instinctively condemns, the crime of murder; and shows that the scribes and Pharisees, and those who had been like them in bygone days, really destroyed the sixth commandment by limiting its range to the muscles, so that, if there were no actual killing, the commandment was not broken; whereas its true sphere was the heart, the essence of the forbidden crime being found in unjustifiable anger, even though no word is uttered or muscle moved,--a view of the case which ought to have been suggested to the intelligent student of the law by such words as these: "Thou shalt not hate thy brother in thine heart" (Lev. xix. 17); or again: "Whoso killeth his neighbour ignorantly, whom he hated not in time past, ... is not worthy of death, inasmuch as he hated him not in time past" (Deut. xix. 4). Hatred in the heart, then, is murder. How searching! And how terribly severe the sentence! Even in its least aggravated form it is the same as that decreed against the actual shedding of blood. All the three sentences are death-penalties, only there are aggravations in the penalty where there are aggravations in the offence. Such is the Saviour's teaching on the great subject of sin. Yet there are those who imagine that the Sermon on the Mount is all the gospel they need!