For the earth brings forth fruit of itself; first the blade, then the ear, after that the full grain in the ear.
All Commentaries on Mark 4:28 Go To Mark 4
Cornelius a Lapide
AD 1637
For the earth of itself bringeth forth fruit; first the blade, then the ear, afterwards the full corn in the ear. Arabic, Because the earth alone bringeth forth fruit; . . . afterwards the ear is filled, and when the fruit is perfect, then the sickle is applied, because it is harvest. Thus, in like manner, by the preaching of the Gospel, the faith of Christ and His Church grew by various degrees of increase.
Moraliter: Expositors adapt these three expressions, blade, ear, full corn, to a threefold increment of virtues and merits. For the earth of our heart germinates, first, the blade, when it conceives good desires; secondly, the ear, when it proceeds to earnest working; thirdly, the grain, when it brings the works of virtue to full maturity and perfection. Theophylact says, "The blade is the beginning of good; the ear is when we resist temptations; the fruit is perfect work."
Hear S. Gregory (Hom15 , in Ezek.), "To produce the blade is to hold the first tender beginning of good. The blade arrives at perfection when virtue conceived in the mind leads to advancement in good works. The full corn fructifies in the ear when virtue makes such great progress that it has its perfect work."
Christ here intimates that the Apostles, and those who work for the conversion of souls, ought with long-suffering to await the fruit of their labours, as husbandmen do. They ought to cherish those who are tender in the faith, and gradually lead them on to the height of virtue by teaching, admonishing, and exercising them. Let no one, therefore, says Bede, who is beheld to be of good purpose in the tenderness of his mind, be despised, because the fruit takes its rise from the blade, and becomes corn.
Symbolically: The Scholiast says the blade was in the law of nature, the ear in the law of Moses, the fruit in the Gospel.