New Defender's Study Bible Notes
12:17 James. This James was obviously not the James who had just been slain by Herod, but rather James the half-brother of Jesus, who was becoming increasingly responsible for the leadership of the Jerusalem church (Acts 15:13).
12:17 another place. At this point, Peter disappears from the narrative for several years, although he was active again in the Jerusalem church at the time of the council dealing with Jewish legalism (Acts 15:7).