Acts 12:10 in the World English Bible
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.
Context
9 And he went out, and followed him; and wist 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 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.
11 And when Peter was come to himself, he said, Now I know of a surety, that the Lord hath sent his angel, and hath delivered me out of the hand of Herod, and from all the expectation of the people of the Jews.