Luke
Acts 9:6BSB·traditional attribution

“Now get up and go into the city, and you will be told what you must do.”

John Calvin Reformed @genevareformer

6. The fruit of that reprehension followeth, wherewith we have said it was requisite that Paul should have been sore shaken, that his hardness might be broken. For now he offereth himself as ready to do whatsoever he should command him, whom of late he despised. For when he asketh what Christ would have him do, he granteth him authority and power.

Matthew Henry Presbyterian @wholebiblehenry

We found mention made of Saul twice or thrice in the story of Stephen, for the sacred penman longed to come to his story; and now we are come to it, not quite taking leave of Peter but from henceforward being mostly taken up with Paul the apostle of the Gentiles, as Peter was of the circumcision.

Commenting on Acts 9:1-9

John Gill Reformed Baptist @doctorgill

And he trembling and astonished,.... At the light and voice, and appearance of Christ, and especially at the words last spoken; he was now pricked to the heart, and filled with a sense of sin, and loaded with guilt, and had dreadful apprehensions of his state and condition, on account of his past wickedness, and the present course of sin he was in: so persons...