Acts 12:10-11

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.

¹¹When Peter had come to himself he said, “Now I know for certain that the Lord sent His angel and delivered me out of Herod's hand and from all the expectation of the Jewish people.”