You are to “take my yoke upon you, and learn from me.” You are not learning from me how to refashion the fabric of the world, nor to create all things visible and invisible, nor to work miracles and raise the dead. Rather, you are simply learning of me: “that I am meek and lowly in heart.” If you wish to reach high, then begin at the lowest level. If you are trying to construct some mighty edifice in height, you will begin with the lowest foundation. This is humility. However great the mass of the building you may wish to design or erect, the taller the building is to be, the deeper you will dig the foundation. The building in the course of its erection rises up high, but he who digs its foundation must first go down very low. So then, you see even a building is low before it is high and the tower is raised only after humiliation.
Saint Augustine, Sermon 69.2, quoted in Manlio Simonetti (ed), Matthew 1 – 13, Ancient Christian Commentary on Scripture New Testament Ia, (InterVarsity Press, 2001) 232.