New Defender's Study Bible Notes
9:17 Brother Saul. Ananias, despite his reservations, graciously recognized Saul (“the requested one”), soon to be known as Paul, “the little one,” as “Brother.”
9:17 filled with the Holy Ghost. Paul was converted on the road to Damascus, and no doubt was baptized into Christ by the Holy Spirit immediately, but was not “filled with the Holy Spirit” until his sight was restored and he received spiritual sight at the same time, submitting himself fully to Christ.