John Wesley on Acts 12:1

About that time - So wisely did God mix rest and persecution in due time and measure succeeding each other. Herod - Agrippa; the latter was his Roman, the former his Syrian name. He was the grandson of Herod the Great, nephew to Herod Antipas, who beheaded John the Baptist; brother to Herodias, and father to that Agrippa before whom St. Paul afterward made his defence. Caligula made him king of the tetrarchy of his uncle Philip, to which he afterward added the territories of Antipas. Claudius made him also king of Judea, and added thereto the dominions of Lysanias.