Acts 12:2-6

2He had James, the brother of John, put to death with the sword. 3When he saw that this met with approval among the Jews, he proceeded to seize Peter also. This happened during the Festival of Unleavened Bread.

4After arresting him, he put him in prison, handing him over to be guarded by four squads of four soldiers each. Herod intended to bring him out for public trial after the Passover.

5So Peter was kept in prison, but the church was earnestly praying to God for him. 6The night before Herod was to bring him to trial, Peter was sleeping between two soldiers, bound with two chains, and sentries stood guard at the entrance.