Acts 12:10 in the King James Version
When they were past the first and the second ward, they came unto the iron gate that leadeth unto the city; which opened to them of his own accord: and they went out, and passed on through one street; and forthwith the angel departed from him.
Context
9 And he went out and followed him. He didn’t know that what was being done by the angel was real, but thought he saw a vision.
10 When they were past the first and the second guard, they came to the iron gate that leads into the city, which opened to them by itself. They went out and went down one street, and immediately the angel departed from him.
11 When Peter had come to himself, he said, “Now I truly know that the Lord has sent out his angel and delivered me out of the hand of Herod, and from everything the Jewish people were expecting.”