Roman Catechism 5.23

Chapter 5 — Part I: The Creed — Article III: Who Was Conceived by the Holy Ghost, Born of the Virgin Mary

Section 23. Humility And Poverty Of Christ — What can be more useful, what better calculated to subdue the pride and haughtiness of the human heart, than to reflect frequently that God humbles Himself in such a manner as to assume our frailty and weakness, in order to communicate to us His glory; that God becomes man, and that He at whose nod, to use the words of Scripture, the pillars of heaven tremble and are affrighted bows His supreme and infinite majesty to minister to man; that He whom the Angels adore in heaven is born on earth ! When such is the goodness of God towards us, what, I ask, should we not do to testify our obedience to His will? With what willingness and alacrity should we not love, embrace, and perform all the duties of humility ?