The true teacher of humility is Christ, who humbled Himself, and became obedient unto death, even the death of the cross. But He does not lose His divinity in teaching us humility; in the one He is the Father’s equal, in the other He is assimilated to us. By that which made Him the equal of the Father, He called us into existence; and by that in which He is like unto us, He redeemed us from ruin.
These, then, were the words of praise addressed to Jesus by the multitude, “Hosanna: blessed is He that cometh in the name of the Lord, the King of Israel.” What a cross of mental suffering must the Jewish rulers have endured when they heard so great a multitude proclaiming Christ as their King! But what honor was it to the Lord to be King of Israel? What great thing was it to the King of eternity to become the King of men? For Christ’s kingship over Israel was not for the purpose of exacting tribute, of putting swords into His soldiers’ hands, of subduing His enemies by open warfare; but He was King of Israel in exercising kingly authority over their inward natures, in consulting for their eternal interests, in bringing into His heavenly kingdom those whose faith, and hope, and love were centred in Himself. Accordingly, for the Son of God, the Father’s equal, the Word by whom all things were made, in His good pleasure to be King of Israel, was an act of condescension and not of promotion; a token of compassion, and not any increase of power. For He who was called on earth the King of the Jews, is in the heavens the Lord of angels.
Saint Augustine, Tractate on John’s Gospel, 51, 3-4.