Acts 12:1-7

1 Now about that time Herod the king put forth his hands to afflict certain of the church.
2 And he killed James the brother of John with the sword.
3 And when he saw that it pleased the Jews, he proceeded to seize Peter also. And [those] were the days of unleavened bread.
4 And when he had taken him, he put him in prison, and delivered him to four quaternions of soldiers to guard him; intending after the Passover to bring him forth to the people.
5 Peter therefore was kept in the prison: but prayer was made earnestly of the church unto God for him.
6 And when Herod was about to bring him forth, the same night Peter was sleeping between two soldiers, bound with two chains: and guards before the door kept the prison.
7 And behold, an angel of the Lord stood by him, and a light shined in the cell: and he smote Peter on the side, and awoke him, saying, Rise up quickly. And his chains fell off from his hands.
The American Standard Version is in the public domain.