Acts 13:9

“Then Saul (who also is called Paul), etc.] He was called by both these names; as he was a Jew by birth, his parents called him Saul, that was his Jewish name, and by which he went among the Jews; and as he was a citizen of a Roman city, Tarsus in Cilicia, he went among the Romans, or Gentiles, by the name of Paul, a Roman name; and it was usual with the Jews to be called after this manner, that is, to have one name among themselves, and another among the Gentiles: it is a rule with them f637, that “the Israelites out of the land, their names are as the names of the Gentiles;” yea, their names differed in Judea and Galilee; a woman went by one name in Judea, and another in Galilee f638: and…”

“Then Saul . . . also . . . called Paul--and henceforward Paul only; a softening of his former name, in accommodation to Roman ears, and (as the word signifies "little") probably with allusion as elsewhere to his insignificance of stature and appearance (Co2 10:1, Co2 10:10) [WEBSTER and WILKINSON]. filled with the Holy Ghost--the Spirit coming mightily upon him. set his eyes on him and said--Henceforward Barnabas sinks into the background. The whole soul of his great colleague, now drawn out, as never before, shoots, by the lightning gaze of his eye, through the dark and tortuous spirit of the sorcerer. What a picture!”

“}Then Saul, (who is also called Paul) - This is the last time that this apostle is called “Saul.” Henceforward, he is designated by the title by which he is usually known, as “Paul.” When, or why, this change occurred in the name, has been a subject on which commentators are not agreed. From the fact that the change in the name is here first intimated, it would seem probable that it was first used in relation to him at this time. By whom the name was given him whether he assumed it himself, or whether it was first given him by Christians or by Romans - is not intimated. The name is of Roman origin. In the Latin language the name Paulus signifies little, dwarfish; and some have conjectured…”

“Then Saul, who was also called Paul - It is not improbable, that coming now among the Romans, they would naturally adapt his name to their own language, and so called him Paul instead of Saul. Perhaps the family of the proconsul might be the first who addressed to or spoke of him by this name. And from this time, being the apostle of the Gentiles, he himself used the name which was more familiar to them. Acts 13:10”

“13:9 Luke makes the significant transition from the name Saul (a Hebrew name) to Paul (a Greco-Roman name), perhaps indicating that Paul was now on a predominantly Gentile mission. For the rest of the book of Acts, he is called Paul except when he recounts his conversion (as in 22:7, 13; 26:14).”

“who: Act 13:7 filled: Act 2:4, Act 4:8, Act 4:31, Act 7:55; Mic 3:8 set: Mar 3:5; Luk 20:17 Acts 13:10”