Luke
Acts 8:26BSB·traditional attribution

Now an angel of the Lord said to Philip, “Get up and go south to the desert road that goes down from Jerusalem to Gaza.”

John Calvin Reformed @genevareformer

26. And the angel. Luke passeth over unto a new history, to wit, how the gospel came even unto the Ethiopians. For though he reporteth there was but one man converted unto the faith of Christ, yet because his authority and power was great in all the realm, his faith might spread abroad a sweet smell far and wide.

Matthew Henry Presbyterian @wholebiblehenry

We have here the story of the conversion of an Ethiopian eunuch to the faith of Christ, by whom, we have reason to think, the knowledge of Christ was sent into that country where he lived, and that scripture fulfilled, Ethiopia shall soon stretch out her hands (one of the first of the nations) unto God, Psa 68:31. I.

Commenting on Acts 8:26-40

John Gill Reformed Baptist @doctorgill

And he arose and went,.... As soon as he had his orders, he immediately obeyed them; he made no dispute about the matter, though he was directed only part of his way, and had no account of what he went about, or was to do; and behold, a man of Ethiopia; or "a man, an Ethiopian"; an Hebraism, such as "a man a Jew", Zac...