Matthew wrote for the Jews, and in Hebrew [ed. note: It seems to be the general witness of antiquity that there was a Hebrew copy of St. Matthew’s Gospel, whether written before or after the Greek. This Hebrew copy was interpolated by the Ebionites.]; to them it was unnecessary to explain the divinity which they recognized; but necessary to unfold the mystery of the Incarnation. John wrote in Greek for the Gentiles who knew nothing of a Son of God. They required therefore to be told first, that the Son of God was God, then that this Deity was incarnate.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Hom. in Matt., Hom. i