Ver. 70. As he spoke by the mouth of his holy prophets which have been since the world began.
Theophylact: That Christ was born of the house of David, Micah relates, saying, And you, Bethlehem, are not the least in the city of Juda, for out of you shall come a governor who shall rule my people Israel. But all the prophets spoke of the Incarnation, and therefore it is said, As he spoke by the month of his holy prophets.
A Greek expositor: Whereby he means that God spoke through them, and that their speech was not of man.
Theophylact: But he says, Which have been since the world began. Because all the Scriptures of the Old Testament were a constant prophecy of Christ. For both our father Adam himself, and the other fathers, by their deeds bore testimony to His dispensation.