Acts 22:12 - Ellicott's Commentary On The Whole Bible

A devout man according to the law. — In Acts 9:10, Ananias is simply described as “a disciple.” The special description here was obviously given with a view to conciliate those who were listening to the speech. One, such as Ananias was, was not likely to have connected himself with a profane blasphemer, nor to have received the converted persecutor except on evidence that the change had come from God. St. Paul naturally confines himself to what came within his own experience, and does not dwell on the vision which had been seen by Ananias.