6So when Herod was about to bring him out, that night Peter was sleeping between two soldiers, bound with two chains, with guards protecting the prison in front of the doors.
7Suddenly, an angel of the Lord was there, and a light shone in the cell; striking Peter on the side he roused him saying, “Quick, get up!” and the chains fell away from his wrists.
8Then the angel said to him, “Fasten your belt and put on your sandals.” So he did. Then he said to him, “Put on your cloak and follow me.”
9So he went out and started following him, not realizing that what the angel was doing was real; he supposed he was seeing a vision.
10Passing through the first and second guard posts, they came to the iron gate that leads into the city, that opened for them by itself; upon exiting they advanced one block, and suddenly the angel left him.
Acts 12
Acts 12:6-10