Jerome
Catena Aurea · Matthäusevangelium 5
Think not that I am come to destroy the Law, or the Prophets: I am not come to destroy, but to fulfil. For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled. Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
This head is closely connected with the preceding. It is directed against the Pharisees, who, despising the commandments of God, set up traditions of their own, and means that their teaching the people would not avail themselves, if they destroyed the very least commandment in the Law. We may take it in another sense. The learning of the master if joined with sin however small, loses him the highest place, nor does it avail any to teach righteousness, if he destroys it in his life. Perfect bliss is for him who fulfils in deed what he teaches in word.