The interpretation timeline
Acts 9:27 Douay-Rheims

But Barnabas took him, and brought him to the apostles, and told them how he had seen the Lord, and that he had spoken to him; and how in Damascus he had dealt confidently in the name of Jesus.

A.D. 407 – 1871 7 witnesses 8 excerpts

Patristic

before A.D. 750
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“One may well be much at a loss here to understand how it is that, whereas in the Epistle to the Galatians Paul says, "I went not to Jerusalem," but "into Arabia" and "to Damascus," and, "After three years I went up to Jerusalem," and "to see Peter" (Gal. i. 17), here the writer says the contrary. There, Paul says, "And none of the Apostles saw I;" but here, it is said Barnabas "brought him to the Apostles." Well, then, either Paul means, "I went not up with intent to refer or attach myself to them" - for what saith he? "I referred not myself, neither went I to Jerusalem to those who were Apostles before me:" or else, that the laying await for him in Damascus was after his return from Arabia; or else, again, that the visit to Jerusalem was after he came from Arabia. Certainly of his own accord he went not to the Apostles, but "assayed to join himself unto the disciples" - as being a teacher, not a disciple - "I went not," he says, "for this purpose, that I should go to those who were Apostles before me: certainly, I learnt nothing from them." Or, he does not speak of this visit, but passes it by, so that the order is, "I went into Arabia, then I came to Damascus, then to Jerusalem, then to Syria:" or else, again, that he went up to Jerusalem, then was sent to Damascus, then to Arabia, then again to Damascus, then to Caesarea. Also, the visit "after fourteen years," probably, was when he brought up the alms to the brethren together with Barnabas (Gal. ii. 1): or else he means a different occasion (Acts xi. 30). For the Historian for conciseness, often omits incidents, and condenses the times. Observe how unambitious the writer is, and how he does not even relate that vision, but passes it by. "He assayed," it says, "to join himself to the disciples. And they were afraid of him." By this again is shown the ardor of Paul's character: not only from the mouth of Ananias, and of those who wondered at him there, but also of those in Jerusalem: "they believed not that he was a disciple:" for truly that was beyond all human expectation. He was no longer a wild beast, but a man mild and gentle! And observe how he does not go to the Apostles, such is his forbearance, but to the disciples, as being a disciple. He was not thought worthy of credit. "But Barnabas" - "Son of Consolation" is his appellation, whence also he makes himself easy of access to the man: for "he was a kind man" (ch. xi. 24), exceedingly, and this is proved both by the present instance, and in the affair of John Mark - "having taken him, brought him to the Apostles, and related to them how he had seen the Lord in the way." It is likely that at Damascus also he had heard all about him: whence he was not afraid but the others were, for he was a man whose glance inspired fear.”
Source
“"But Barnabas" - "Son of Consolation" is his appellation, whence also he makes himself easy of access to the man: for "he was a kind man" (ch. xi. 24), exceedingly, and this is proved both by the present instance, and in the affair of John (Mark) - "having taken him, brought him to the Apostles, and related to them how he had seen the Lord in the way." It is likely that at Damascus also he had heard all about him: whence he was not afraid but the others were, for he was a man whose glance inspired fear. "But they were all afraid of him." See how they feared the dangers, how the alarm was yet at its height in them. "But Barnabas," etc. - it seems to me that Barnabas was of old a friend of his - "and related," etc.: observe how Paul says nothing of all this himself: nor would he have brought it forward to the others, had he not been compelled to do so.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“And be was with them,.... Peter and James, and the rest of the disciples; he lived with them, conversed with them, and joined with them in all religious exercises; which is signified by his coming in and going out at Jerusalem; no one of the apostles or disciples forbidding or hindering him.”
1832
A.D.
Adam Clarke Methodist
1762–1832
“Barnabas - brought him to the apostles - That is, to Peter and James; for others of the apostles he saw none, Gal 1:19. It appears that he went up at this time to Jerusalem merely to see Peter, with whom he abode fifteen days, Gal 1:18. How it came that the apostles and Church at Jerusalem had not heard of Saul's conversion, which had taken place three years before, is not easy to be accounted for. The following considerations may help; 1. It is certain that intelligence did not travel speedily in those primitive times; there were few open roads, and no regular posts, except those between military stations. 2. Though there were many Jews in Damascus, and several Christians, yet the city was heathen, and under a heathen king, with whom the Jews at Jerusalem could have little commerce. 3. Though Herod had married the daughter of Aretas, yet, as he had put her away, there were great animosities between the two courts, which at last broke out into an open war; this must have prevented all social and commercial intercourse. 4. The Christians were at that time greatly persecuted by the Jews, and therefore the few that dwelt at Damascus could have little connection, if any, with their brethren at Jerusalem. 5. It might be the interest of the Jews at Jerusalem, supposing they had heard of it, to keep the fact of Saul's conversion as quiet as possible, that the Christian cause might not gain credit by it. 6. They might have heard of his conversion; but either did not fully credit what they had heard, or were not satisfied that the person who now presented himself was the man; for it is not likely that all the Christians at Jerusalem had been personally acquainted with Saul.”
Source
1849
A.D.
1774–1849
“Brought him to the apostles Peter and James. See Galatians i. 18. and 19.”
1863
A.D.
1871
A.D.
1871
“But Barnabas . . . brought him to the apostles--that is, to Peter and James; for "other of the apostles saw I none," says he fourteen years after (Gal 1:18-19). Probably none of the other apostles were there at the time (Act 4:36). Barnabas being of Cyprus, which was within a few hours' sail of Cilicia, and annexed to it as a Roman province, and Saul and he being Hellenistic Jews and eminent in their respective localities, they may very well have been acquainted with each other before this [HOWSON]. What is here said of Barnabas is in fine consistency with the "goodness" ascribed to him (Act 11:24), and with the name "son of consolation," given him by the apostles (Act 4:36); and after Peter and James were satisfied, the disciples generally would at once receive him. how he had seen the Lord . . . and he--the Lord. had spoken to him--that is, how he had received his commission direct from the Lord Himself.”
Source

Undated

date unknown
date
unknown
Glossa Ordinaria Medieval
“Barnabas. This man was a Cypriot by race, a Levite, who above is recorded to have brought the price of a field to the feet of the apostles.”
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.