Jerome
Catena Aurea · Matthäusevangelium 13
Hear ye therefore the parable of the sower. When any one heareth the word of the kingdom, and understandeth it not, then cometh the wicked one, and catcheth away that which was sown in his heart. This is he which received seed by the way side. But he that received the seed into stony places, the same is he that heareth the word, and anon with joy receiveth it; Yet hath he not root in himself, but dureth for a while: for when tribulation or persecution ariseth because of the word, by and by he is offended. He also that received seed among the thorns is he that heareth the word; and the care of this world, and the deceitfulness of riches, choke the word, and he becometh unfruitful. But he that received seed into the good ground is he that heareth the word, and understandeth it; which also beareth fruit, and bringeth forth, some an hundredfold, some sixty, some thirty.
And it is to be noted, that as in the bad ground there were three degrees of difference, to wit, that by the way side, the stony and the thorny ground; so in the good soil there is a three-fold difference, the hundred-fold, the sixty-fold, and the thirty-fold. And in this as in that, not the substance but the will is changed, and the hearts as well of the unbelieving as the believing receive seed; as in the first case He said, Then cometh the wicked one, and carrieth off that which is sown in the heart; and in the second and third case of the bad soil He said, This is he that heareth the word. So also in the exposition of the good soil, This is he that heareth the word. Therefore we ought first to hear, then to understand, and after understanding to bring forth the fruits of teaching, either an hundred-fold, or sixty, or thirty.