Acts 12:9-10

Peter quickly left the cell and followed the angel, even though he thought it was only a dream or a vision, for it seemed unreal—he couldn’t believe it was really happening! They walked unseen past the first guard post and then the second before coming to the iron gate that leads to the city—and the gate swung open all by itself right in front of them! They went out into the city and were walking down a narrow street when all of a sudden the angel disappeared.