Acts of the Apostles 12:1-4

About that time King Herod Agrippa began to persecute some believers in the church. He had the apostle James (John’s brother) killed with a sword. When Herod saw how much this pleased the Jewish people, he also arrested Peter. (This took place during the Passover celebration.) Then he imprisoned him, placing him under the guard of four squads of four soldiers each. Herod intended to bring Peter out for public trial after the Passover.