Acts 12:7

4 And when he had apprehended him, he put [him] in prison, and delivered [him] to four quaternions of soldiers to keep him; intending after the passover to bring him forth to the people.

5 Peter therefore was kept in prison: but prayer was made without ceasing by the church to God for him.

6 And when Herod would have brought him forth, the same night Peter was sleeping between two soldiers, bound with two chains; and the keepers before the door kept the prison.

7 And behold, the angel of the Lord came upon [him], and a light shined in the prison; and he smote Peter on the side, and raised him up, saying, Arise quickly. And his chains fell off from [his] hands.

8 And the angel said to him, Gird thyself, and bind on thy sandals; and so he did. And he saith to him, Cast thy garment about thee, and follow me.

9 And he went out, and followed him, and knew not that it was true which was done by the angel; but thought he saw a vision.

10 When they were past the first and the second ward, they came to the iron gate that leadeth to the city; which opened to them of its own accord: and they went out, and passed on through one street; and forthwith the angel departed from him.