Matthew 13:51

Speaking to His disciples, He calls them Scribes on account of their knowledge, because they understood the things that He brought forward, both new and old, that is from the Law and from the Gospels; both being of the same householder, and both treasures of the same owner. He compares them to Himself under the figure of a householder, because they had received doctrine of things both new and old out of His treasury of the Holy Spirit.

Having then uttered all this, and concluded His discourse in a tone to cause fear, and signified that these are the majority of cases (for He dwelt more on them), He saith, "Have ye understood all these things? They say unto Him, Yea, Lord." Then because they understood, He again praises them, saying, "Therefore every Scribe, which is instructed in the Kingdom of Heaven, is like unto a man that is an householder, which bringeth forth out of his treasure things new and old." Wherefore elsewhere also He saith, "I will send you wise men and scribes." Seest thou how so far from excluding the Old Testament, He even commends it, and speaks publicly in favor of it, calling it "a treasure"? So that as many as are ignorant of the divine Scriptures cannot be "householders;" such as neither have of themselves, nor receive of others, but neglect their own case, perishing with famine. And not these only, but the heretics too, are excluded from this blessing. For they bring not forth things new and old. For they have not the old things, wherefore neither have they the new; even as they who have not the new, neither have they the old, but are deprived of both. For these are bound up and interwoven one with another. Let us then hear, as many of us as neglect the reading of the Scriptures, to what harm we are subjecting ourselves, to what poverty. For when are we to apply ourselves to the real practice of virtue, who do not so much as know the very laws according to which our practice should be guided? But while the rich, those who are mad about wealth, are constantly shaking out their garments, that they may not become moth-eaten; dost thou, seeing forgetfulness worse than any moth wasting thy soul, neglect conversing with books? dost thou not thrust away from thee the pest, adorn thy soul, look continually upon the image of virtue, and acquaint thyself with her members and her head? For she too hath a head and members more seemly than any graceful and beautiful body.

For when the end of the world shall be come, then shall be shown the true test of separating the fishes, and as in a sheltered harbour the good shall be sent into the vessels of heavenly abodes, but the flame of hell shall seize the wicked to be dried up and withered. For this is spoken especially to the Apostles, whom He would have not to hear only as the multitude, but to understand as having to teach others. Or the Apostles are called Scribes instructed, as being the Saviour's notaries who wrote His words and precepts on fleshly tables of the heart with the sacraments of the heavenly kingdom, and abounded in the wealth of a householder, bringing forth out of the stores of their doctrine things new and old; whatsoever they preached in the Gospels, that they proved by the words of the Law and the Prophets. Whence the Bride speaks in the Song of Songs; I have kept for thee my beloved the new with the old. (c. 7:13.)

(ubi sup.) But if by things new and old in this passage we understand the two Testaments, we deny Abraham to have been learned, who although he knew indeed some deeds of the Old Testament, yet had not read the words. Neither Moses may we compare to a learned householder, for although he composed the Old Testament, yet had he not the words of the New. But what is here said may be understood as meant not of those who had been, but of such as might hereafter be in the Church, who then bring forth things new and old when they speak the preachings of both Testaments, in their words and in their lives. (ubi sup.) Otherwise; The things old are, that the human race for its sin should suffer in eternal punishment; the things new, that they should be converted and live in the kingdom. First, He brought forward a comparison of the kingdom to a treasure found and a pearl of price; and after that, narrated the punishment of hell in the burning of the wicked, and then concluded with Therefore every Scribe, &c. as if He had said, He is a learned preacher in the Church who knows to bring forth things new concerning the sweetness of the kingdom, and to speak things old concerning the terror of punishment; that at least punishment may deter those whom rewards do not excite.

(non occ.) When the multitude had departed, the Lord spoke to His disciples in parables, by which they were instructed only so far as they understood them; wherefore He asks them, Have ye understood all these things? They say unto him, Yea, Lord.