From the Homilies on the Book of St Matthew by St John Chrysostom (#3)
From Homily 7:
Let us then also follow the magi, let us separate ourselves from our barbarian customs, and make our distance from them great, that we may see Christ, since they too, had they not been far from their own country, would have missed seeing Him. Let us depart from the things of earth. For so the wise men, while they were in Persia, saw but the star, but after they had departed from Persia, they beheld the Sun of Righteousness. Or rather, they would not have seen so much as the star, unless they had readily risen up from thence. Let us then also rise up; though all men be troubled, let us run to the house of the young Child; though kings, though nations, though tyrants interrupt this our path, let not our desire pass away. For so shall we thoroughly repel all the dangers that beset us. Since these too, except they had seen the young Child, would not have escaped their danger from the king. Before seeing the young Child, fears and dangers pressed upon them from every side; but after the adoration, it is calm and security; and no longer a star but an angel receives them, having become priests from the act of adoration; for we see that they offered gifts also.