Luke
Acts 1:9ESV·traditional attribution

And when he had said these things, as they were looking on, he was lifted up, and a cloud took him out of their sight.

John Calvin Reformed @genevareformer

9. The readers may learn out of our Institutions what profit we reap by the ascension of Christ. Notwithstanding, because it is one of the chiefest points of our faith, therefore doth Luke endeavor more diligently to prove the same; yea, rather, the Lord himself meant to put the same out of all doubt, when as he hath ascended so manifestly, and hath confirmed the...

Matthew Henry Presbyterian @wholebiblehenry

In Jerusalem Christ, by his angel, had appointed his disciples to meet him in Galilee; there he appointed them to meet him in Jerusalem again, such a day. Thus he would try their obedience, and it was found ready and cheerful; they came together, as he appointed them, to be the witnesses of his ascension, of which we have here an account. Observe, I.

Commenting on Acts 1:6-11

John Gill Reformed Baptist @doctorgill

And when he had spoken these things,.... That the times and seasons were not to be known by them, but to be kept a secret by the Father: that they should tarry at Jerusalem, and in a few days be baptized with the Holy Ghost, and receive such power, abilities, strength, and courage thereby, as to bear a noble testimony for Christ, not only there...