Peter went out and followed him, without realizing that what the angel was doing was real; he thought he was seeing a vision.
In context
7Suddenly an angel of the Lord stood there, and light filled the room. He struck Peter on the side and woke him. “Quick, get up,” he said, and the chains dropped from Peter’s wrists. 8The angel told him, “Do up your belt and put on your sandals.” He did so. “Wrap your cloak around you and follow me,” he said. 9Peter went out and followed him, without realizing that what the angel was doing was real; he thought he was seeing a vision. 10They passed the first guard post and the second, and came to the iron gate that leads into the city. It opened for them of its own accord, and they went out and walked the length of one street; then the angel left him. 11Peter came to himself and said, “Now I know beyond doubt that the Lord sent his angel and rescued me from Herod’s hand and from everything the Jewish people were expecting.”
