2 And why did they at all worship one who was in swaddling clothes? For if He had been a grown man, one might say, that in expectation of the succor they should receive from Him, they cast themselves into a danger which they foresaw; a thing however to the utmost degree unreasonable, that the Persian, the barbarian, and one that had nothing in common with the nation of the Jews, should be willing to depart from his home, to give up country, and kindred, and friends, and that they should subject themselves to another kingdom.
But if this be foolish, what follows is much more foolish. Of what nature then is this? That after they had entered on so long a journey, and worshipped, and thrown all into confusion, they went away immediately. And what sign at all of royalty did they behold, when they saw a shed, and a manger, and a child in swaddling clothes, and a poor mother? And to whom moreover did they offer their gifts, and for what intent? Was it then usual and customary, thus to pay court to the kings that were born in every place? And did they always keep going about the whole world, worshipping them who they knew should become kings out of a low and mean estate, before they ascended the royal throne? Nay, this no one can say.
And for what purpose did they worship Him at all? If for the sake of things present, then what did they expect to receive from an infant, and a mother of mean condition? If for things future, then whence did they know that the child whom they had worshipped in swaddling clothes would remember what was then done? But if His mother was to remind Him, not even so were they worthy of honor, but of punishment, as bringing Him into danger which they must have foreseen. Thence at any rate it was that Herod was troubled, and sought, and pried, and took in hand to slay Him. And indeed everywhere, he who makes known the future king, supposing him in his earliest age in a private condition, does nothing else than betray him to slaughter, and kindle against him endless warfare.
Do you see how manifold the absurdities appear, if we examine these transactions according to the course of human things and ordinary custom? For not these topics only, but more than these might be mentioned, containing more matter for questions than what we have spoken of. But lest, stringing questions upon questions, we should bewilder you, come let us now enter upon the solution of the matters inquired of, making a beginning of our solution with the star itself.
Source: Homilies on the Gospel of St. Matthew (New Advent)