Pseudo-Chrysostom
Catena Aurea · Markusevangelium 4
And he said, So is the kingdom of God, as if a man should cast seed into the ground; And should sleep, and rise night and day, and the seed should spring and grow up, he knoweth not how. For the earth bringeth forth fruit of herself; first the blade, then the ear, after that the full corn in the ear. But when the fruit is brought forth, immediately he putteth in the sickle, because the harvest is come.
(Vict. Ant. e Cat. in Marc.) Or else He calls by the name of kingdom of God, faith in Him, and in the economy of His Incarnation; which kingdom indeed is as if a man should throw seed. For He Himself being God and the Son of God, having without change been made man, has cast seed upon the earth, that is, He has enlightened the whole world by the word of divine knowledge.