Bede

And he stood up to read, and the book of the prophet Isaiah was handed to him. Indeed, it is a sign of the most humble dispensation, by which God had come among men to serve, not to be served, that he did not disdain to take up the office of the reader. But with a higher providence, Luke began the account of the Lord's deeds with the reading and explanation of the prophet, because all the Scriptures of prophecy reaching up to him were to be revealed through him to us, and in him were to be fulfilled. …

On the Gospel of Luke ↗

Bonaventure

For the instruction of meekness in learning, he adds: And the book of Isaiah the prophet was handed to him, which indeed he received with meekness, not disdaining to use the testimony and authority of Scripture. So also John, Apocalypse ten: "I took the book from the hand of the Angel and devoured it, and it was in my mouth sweet as honey." Now the book of sacred Scripture ought to have been handed to him, because, according to that passage of Apocalypse five, "Worthy is the Lamb who was slain to receive the book and to loose its …

Commentary on Luke, Chapter 4 ↗