Matt. XIII. 24-30.
Another parable put He forth unto them, saying, The Kingdom of Heaven is likened unto a man which sowed good seed in his field. But while men slept, his enemy came and sowed tares among the wheat, and went his way. But when the blade was sprung up, and brought forth fruit, then appeared the tares. So the servants of the householder came and said to him, Sir, did you not sow good seed in your field? Whence then has it tares? He said to them, An enemy has done this. The servants said to him, Will you then that we go and gather them up? But he said, Nay, lest while you gather up the tares, you root up also the wheat with them. Let both therefore grow together until the harvest.
What is the difference between this, and the parable before it? There He speaks of them that have not at all holden with Him, but have started aside, and have thrown away the seed; but here He means the societies of the heretics. For in order that not even this might disturb His disciples, He foretells it also, after having taught them why He speaks in parables. The former parable then means their not receiving Him; this, their receiving corrupters. For indeed this also is a part of the devil’s craft, by the side of the truth always to bring in error, painting thereon many resemblances, so as easily to cheat the deceivable. Therefore He calls it not any other seed, but tares; which in appearance are somewhat like wheat.
Then He mentions also the manner of his device. For while men slept, says He. It is no small danger, which He hereby suspends over our rulers, to whom especially is entrusted the keeping of the field; and not the rulers only, but the subjects too.
And He signifies also that the error comes after the truth, which the actual event testifies. For so after the prophets, were the false prophets; and after the apostles, the false apostles; and after Christ, Antichrist. For unless the devil see what to imitate, or against whom to plot, he neither attempts, nor knows how. Now then also, having seen that one brought forth a hundred, another sixty, another thirty, he proceeds after that another way. That is, not having been able to carry away what had taken root, nor to choke, nor to scorch it up, he conspires against it by another craft, privily casting in his own inventions.
And what difference is there, one may say, between them that sleep, and them that resemble the wayside? That in the latter case he immediately caught it away; yea, he suffered it not even to take root; but here more of his craft was needed.
And these things Christ says, instructing us to be always wakeful. For, says He, though thou quite escape those harms, there is yet another harm. For as in those instances the wayside, and the rock, and the thorns, so here again sleep occasions our ruin; so that there is need of continual watchfulness. Wherefore He also said, He that endures to the end, the same shall be saved.
Something like this took place even at the beginning. Many of the prelates, I mean, bringing into the churches wicked men, disguised heresiarchs, gave great facility to the laying that kind of snare. For the devil needs not even to take any trouble, when he has once planted them among us.
And how is it possible not to sleep? One may say. Indeed, as to natural sleep, it is not possible; but as to that of our moral faculty, it is possible. Wherefore Paul also said, Watch ye, stand fast in the faith.
After this He points out the thing to be superfluous too, not hurtful only; in that, after the land has been tilled, and there is no need of anything, then this enemy sows again; as the heretics also do, who for no other cause than vainglory inject their proper venom.
And not by this only, but by what follows likewise, He depicts exactly all their acting. For, When the blade was sprung up, says He, and brought forth fruit, then appeared the tares also; which kind of thing these men also do. For at the beginning they disguise themselves; but when they have gained much confidence, and some one imparts to them the teaching of the word, then they pour out their poison.
But wherefore does He bring in the servants, telling what has been done? That He may pronounce it wrong to slay them.
And He calls him an enemy, because of his harm done to men. For although the despite is against us, in its origin it sprang from his enmity, not to us, but to God. Whence it is manifest, that God loves us more than we love ourselves.
And see from another thing also, the malicious craft of the devil. For he did not sow before this, because he had nothing to destroy, but when all had been fulfilled, that he might defeat the diligence of the Husbandman; in such enmity against Him did he constantly act.
And mark also the affection of the servants. I mean, what haste they are in at once to root up the tares, even though they do it indiscreetly; which shows their anxiety for the crop, and that they are looking to one thing only, not to the punishment of that enemy, but to the preservation of the seed sown. For of course this other is not the urgent consideration.