Ellicott's Commentary for English Readers - Acts 9:5
(5) Who art thou, Lord?—The word “Lord” could not as yet have been used in all the fulness of its meaning. As in many cases in the Gospels, it was the natural utterance of respect and awe (John 5:7; John 9:36; John 20:15), such as would be roused by what the persecutor saw and heard.I am Jesus whom thou persecutest.—Some of the best MSS. give “Jesus of Nazareth”; or better, perhaps, Jesus the Nazarene. It is probable, however, that this was inserted from Acts 22:18, where it occurs in St.... read more
Ellicott's Commentary for English Readers - Acts 9:4
(4) Saul, Saul, why persecutest thou me?—It is remarkable that here only, in the original Greek, and in Acts 9:17, as in the reproduction of the words in Acts 22:27; Acts 26:14, do we find the Hebrew form of the Benjamite name. It is as though he, who gloried in being above all things a Hebrew of the Hebrews, heard himself claimed as such by Him who spoke from heaven, called as Samuel had been called of old (1 Samuel 3:4-8), and having to decide whether he would resist to the end, or yield,... read more