In the same sense Chrysostom says (Hom. vi in Matth.): "It is not an astronomer's business to know from the stars those who are born, but to tell the future from the hour of a man's birth: whereas the Magi did not know the time of the birth, so as to conclude therefrom some knowledge of the future; rather was it the other way about."
Reply Obj. 4: Chrysostom relates (Hom. ii in Matth.) that, according to some apocryphal books, a certain tribe in the far east near the ocean was in the possession of a document written by Seth, referring to this star and to the presents to be offered: which tribe watched attentively for the rising of this star, twelve men being appointed to take observations, who at stated times repaired to the summit of a mountain with faithful assiduity: whence they subsequently perceived the star containing the figure of a small child, and above it the form of a cross.
Or we may say, as may be read in the book De Qq. Vet. et Nov. Test., qu. lxiii, that "these Magi followed the tradition of Balaam," who said, "'A star shall rise out of Jacob.' Wherefore observing this star to be a stranger to the system of this world, they gathered that it was the one foretold by Balaam to indicate the King of the Jews."
Or again, it may be said with Augustine, in a sermon on the Epiphany (ccclxxiv), that "the Magi had received a revelation through the angels" that the star was a sign of the birth of Christ: and he thinks it probable that these were "good angels; since in adoring Christ they were seeking for salvation."
Or with Pope Leo, in a sermon on the Epiphany (xxxiv), that "besides the outward form which aroused the attention of their corporeal eyes, a more brilliant ray enlightened their minds with the light of faith." _______________________
SIXTH ARTICLE [III, Q. 36, Art. 6]
Whether Christ's Birth Was Made Known in a Becoming Order?
Objection 1: It would seem that Christ's birth was made known in an unbecoming order. For Christ's birth should have been made known to them first who were nearest to Christ, and who longed for Him most; according to Wis. 6:14: "She preventeth them that covet her, so that she first showeth herself unto them." But the righteous were nearest to Christ by faith, and longed most for His coming; whence it is written (Luke 2:25) of Simeon that "he was just and devout, waiting for the consolation of Israel." Therefore Christ's birth should have been made known to Simeon before the shepherds and Magi.
Obj. 2: Further, the Magi were the "first-fruits of the Gentiles," who were to believe in Christ. But first the "fulness of the Gentiles . . . come in" unto faith, and afterwards "all Israel" shall "be saved," as is written (Rom. 11:25). Therefore Christ's birth should have been made known to the Magi before the shepherds.
Obj. 3: Further, it is written (Matt. 2:16) that "Herod killed all the male children that were in Bethlehem, and in all the borders thereof, from two years old and under, according to the time which he had diligently inquired from the wise men": so that it seems that the Magi were two years in coming to Christ after His birth. It was therefore unbecoming that Christ should be made known to the Gentiles so long after His birth.