IV. The massacre of the Innocents through the consequent flight of Christ, brings the truth into Egypt
Now when the wise men had worshipped the Lord and finished all their devotions, according to the warning of a dream, they return not by the same route by which they had come. For it behooved them now that they believed in Christ not to walk in the paths of their old line of life, but having entered on a new way to keep away from the errors they had left: and it was also to baffle Herod's design, who, under the cloke of homage, was planning a wicked plot against the Infant Jesus.
Hence when his crafty hopes were overthrown, the king's wrath rose to a greater fury. For reckoning up the time which the wise men had indicated, he poured out his cruel rage on all the men-children of Bethlehem, and in a general massacre of the whole of that city slew the infants, who thus passed to their eternal glory, thinking that, if every single babe was slain there, Christ too would be slain. But He Who was postponing the shedding of His blood for the world's redemption till another time, was carried and brought into Egypt by his parents' aid, and thus sought the ancient cradle of the Hebrew race, and in the power of a greater providence dispensing the princely office of the true Joseph, in that He, the Bread of Life and the Food of reason that came down from heaven, removed that worse than all famines under which the Egyptians' minds were labouring, the lack of truth, nor without that sojourn would the symbolism of that One Victim have been complete; for there first by the slaying of the lamb was fore-shadowed the health-bringing sign of the Cross and the Lord's Passover.
Source: Sermons (New Advent)