4 What then is the parable? “Behold,” says He, “a sower went forth to sow.” Whence went He forth, who is present everywhere, who fills all things? Or how went He forth? Not in place, but in condition and dispensation to usward, coming nearer to us by His clothing Himself with flesh. For because we could not enter, our sins fencing us out from the entrance, He comes forth unto us. And wherefore came He forth? To destroy the ground teeming with thorns? To take vengeance upon the husbandmen? By no means; but to till and tend it, and to sow the word of godliness. For by seed here He means His doctrine, and by land, the souls of men, and by the sower, Himself.
What then comes of this seed? Three parts perish, and one is saved.
“And when He sowed, some seeds fell,” He says, “by the way side; and the fowls came and devoured them up.”
He said not, that He cast them, but that “they fell.”
“And some upon the rock, where they had not much earth; and immediately they sprang up, because they had no deepness of earth; and when the sun was up, they were scorched; and because they had no root, they withered away. And some fell among the thorns, and the thorns sprang up, and choked them. But others fell on the good ground, and brought forth fruit, some an hundredfold, some sixtyfold, some thirtyfold. Who has ears to hear let him hear.”
A fourth part is saved; and not this all alike, but even here great is the difference.
Now these things He said, manifesting that He discoursed to all without grudging. For as the sower makes no distinction in the land submitted to him, but simply and indifferently casts his seed; so He Himself too makes no distinction of rich and poor, of wise and unwise, of slothful or diligent, of brave or cowardly; but He discourses unto all, fulfilling His part, although foreknowing the results; that it may be in His power to say, “What ought I to have done, that I have not done?” And the prophets speak of the people as of a vine; “For my beloved,” it is said, “had a vineyard;” and, “He brought a vine out of Egypt;” but He, as of seed. What could this be to show? That obedience now will be quick and easier, and will presently yield its fruit.
But when you hear, “The sower went forth to sow,” think it not a needless repetition. For the sower frequently goes forth for some other act also, either to plough, or to cut out the evil herbs, or to pluck up thorns, or to attend to some such matter; but He went forth to sow.
Whence then, tell me, was the greater part of the seed lost? Not through the sower, but through the ground that received it; that is, the soul that did not hearken.
And wherefore does He not say, Some the careless received, and lost it; some the rich, and choked it, and some the superficial, and betrayed it? It is not His will to rebuke them severely, lest He should cast them into despair, but He leaves the reproof to the conscience of His hearers.
And this was not the case with the seed only, but also with the net; for that too produced many that were unprofitable.
Source: Homilies on the Gospel of St. Matthew (New Advent)