Luke
Acts 8:34ESV·traditional attribution

And the eunuch said to Philip, “About whom, I ask you, does the prophet say this, about himself or about someone else?”

John Calvin Reformed @genevareformer

34. The eunuch said to Philip. Here it appeareth what an earnest desire the eunuch had to learn. He wandereth in divers prophecies of Isaiah as through doubtful boughts, “Per dubias ambages,” through dubious, winding paths. and yet he is not weary of reading.

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

Then Philip opened his mouth,.... With freedom and boldness, and spoke clearly and distinctly, and expounded the passage to him. This is a phrase frequently used in Jewish writings, especially in the book of Zohar (e), when they give an account of this or the other Rabbi interpreting any place of Scripture; as for instance, R. Eleazar "opened", and said, "my sabbaths you shall keep", &c. Again, R.