Matthew Poole and continuators on Acts 9:27

27 But Barnabas took him, and brought him to the apostles, and declared unto them how he had seen the Lord in the way, and that he had spoken to him, and how he had preached boldly at Damascus in the name of Jesus.

Of Barnabas mention is made. Chap. 4.36. who is thought to have been Pauls Fellow-Disciple under Gamaliel.

These Apostles, to whom Barnabas brought Paul, were Peter and Iames, as Gal. 1.18. who being the Apostles of the circumcision, or having Iudas under their charge, were abiding at Ierusalem, whilest the other Apostles probably were absent, being founding of Churches elsewhere.

Some take these things to have been related by Paul, others by Barnabas, who testified these things concerning Paul.