Matthew 13:34-35.
“All these things spoke Jesus unto the multitudes in parables, and without a parable spoke He not unto them; that it might be fulfilled which was spoken by the prophet, saying, I will open my mouth in parables; I will utter things that have been kept secret from the foundation of the world.”
But Mark says, “As they were able to hear it, He spoke the word unto them in parables.”
Then pointing out that He is not making a new thing, He brings in the Prophet also, proclaiming beforehand this His manner of teaching. And to teach us the purpose of Christ, how He discoursed in this manner, not that they might be ignorant, but that He might lead them to inquiry, he added, “And without a parable spoke He nothing unto them.” Yet surely He did say many things without a parable; but then nothing. And for all this no man asked Him questions, whereas the Prophets, we know, they were often questioning: as Ezekiel, for instance; as many others: but these did no such thing. Yet surely His sayings were enough to cast them into perplexity, and to stir them up to the inquiry; for indeed a very sore punishment was threatened by those parables: however, not even so were they moved.
Wherefore also He left them and went away. For,
“Then,” says he, “Jesus sent the multitudes away, and went into His house.”
And not one of the Scribes follows Him; whence it is clear that for no other purpose did they follow, than to take hold of Him. But when they marked not His sayings, thenceforth He let them be.
“And His disciples come unto Him, asking Him concerning the parable of the tares;” although at times wishing to learn, and afraid to ask. Whence then arose their confidence in this instance? They had been told, “To you it is given to know the mysteries of the kingdom of Heaven;” and they were emboldened. Wherefore also they ask in private; not as grudging the multitude, but observing their Master's law. For, “To these,” says He, “it is not given.”
And why may it be that they let pass the parable of the leaven, and of the mustard seed, and inquire concerning this? They let those pass, as being plainer; but about this, as having an affinity to that before spoken, and as setting forth something more than it, they are desirous to learn (since He would not have spoken the same to them a second time); for indeed they saw how severe was the threatening therein uttered. Wherefore neither does He blame them, but rather completes His previous statements.
And, as I am always saying, the parables must not be explained throughout word for word, since many absurdities will follow; this even He Himself is teaching us here in thus interpreting this parable. Thus He says not at all who the servants are that came to Him, but, implying that He brought them in, for the sake of some order, and to make up the picture, He omits that part, and interprets those that are most urgent and essential, and for the sake of which the parable was spoken; signifying Himself to be Judge and Lord of all.
“And He answered,” so it is said, “and said unto them, He that sows the good seed is the Son of Man; the field is the world, the good seed, these are the children of the kingdom, but the tares are the children of the wicked one; the enemy that sows them is the devil; and the harvest is the end of the world, and the reapers are angels. As therefore the tares are gathered and burned in the fire; so shall it be in the end of this world. The Son of Man shall send His angels, and they shall gather out of His kingdom all things that offend, and them which do iniquity; and shall cast them into the furnace of fire, there shall be weeping and gnashing of teeth. Then shall the righteous shine forth as the sun in the kingdom of their Father.”
For whereas He Himself is the sower, and that of His own field, and out of His own kingdom He gathers, it is quite clear that the present world also is His.
But mark His unspeakable love to man, and His leaning to bounty, and His disinclination to punishment; in that, when He sows, He sows in His own person, but when He punishes, it is by others, that is, by the angels.
“Then shall the righteous shine forth as the sun in the kingdom of their Father.” Not because it will be just so much only, but because this star is surpassed in brightness by none that we know. He uses the comparisons that are known to us.
And yet surely elsewhere He says, the harvest is already come; as when He says of the Samaritans, “Lift up your eyes, and look on the fields; for they are white already to harvest.” And again, “The harvest truly is plenteous, but the laborers are few.” How then says He there, that the harvest is already come, while here He said, it is yet to be? According to another signification.
And how having elsewhere said, “One sows, and another reaps,” does He here say, it is Himself that sows? Because there again, He was speaking, to distinguish the apostles, not from Himself, but from the prophets, and that in the case of the Jews and Samaritans. Since certainly it was He who sowed through the prophets also.
And at times He calls this self-same thing both harvest and sowing, naming it with relation, now to one thing, now to another. Thus when He is speaking of the conviction and obedience of His converts, He calls the thing “a harvest,” as though He had accomplished all; but when He is seeking after the fruit of their hearing, He calls it seed, and the end, harvest.
And how says He elsewhere, that “the righteous are caught up first?” Because they are indeed caught up first, but Christ having come, those others are given over to punishment, and then the former depart into the kingdom of heaven. For because they must be in heaven, but He Himself is to come and judge all men here; having passed sentence upon these, like some king He rises with His friends, leading them to that blessed portion. Do you see that the punishment is twofold, first to be burnt up, and then to fall from that glory?
2. But wherefore does He still go on, when the others have withdrawn, to speak to these also in parables? They had become wiser by His sayings, so as even to understand. At any rate, to them He says afterwards,
“Have ye understood all these things? They say unto Him, Yea, Lord.” So completely, together with its other objects, did the parable effect this too, that it made them more clear sighted. What then says He again?
“The Kingdom of Heaven is like treasure hid in a field, the which when a man has found, he hides, and for joy thereof sells all that he has, and buys that field. Again, the Kingdom of Heaven is like a merchant man seeking goodly pearls, who, when he had found one pearl of great price, went and sold all that he had, and bought it.”
Much as in the other place, the mustard seed and the leaven have but some little difference from each other, so here also these two parables, that of the treasure and that of the pearl. This being of course signified by both, that we ought to value the gospel above all things. And the former indeed, of the leaven and of the mustard seed, was spoken with a view to the power of the gospel, and to its surely prevailing over the world; but these declare its value, and great price. For as it extends itself like mustard seed, and prevails like leaven, so it is precious like a pearl, and affords full abundance like a treasure. We are then to learn not this only, that we ought to strip ourselves of everything else, and cling to the gospel, but also that we are to do so with joy; and when a man is dispossessing himself of his goods, he is to know that the transaction is gain, and not loss.
Do you see how both the gospel is hid in the world, and the good things in the gospel?
Except thou sell all, you buy not; except thou have such a soul, anxious and inquiring, you find not. Two things therefore are requisite, abstinence from worldly matters, and watchfulness. For He says “One seeking goodly pearls, who when he had found one of great price, sold all and bought it.” For the truth is one, and not in many divisions.
Source: Homilies on the Gospel of St. Matthew (New Advent)