Acts 12:1-4

During that same time King Herod began to mistreat some who belonged to the church. He ordered James, the brother of John, to be killed by the sword. Herod saw that some of the people liked this, so he decided to arrest Peter, too. (This happened during the time of the Feast of Unleavened Bread.) After Herod arrested Peter, he put him in jail and handed him over to be guarded by sixteen soldiers. Herod planned to bring Peter before the people for trial after the Passover Feast.