Acts.12.9

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.

Acts.12.9

Peter followed him, but didn't believe it was really an angel--he thought he was dreaming.

Acts.12.9

Peter followed him out of the prison, but he had no idea that what the angel was doing was really happening; he thought he was seeing a vision.

Acts.12.9

So he went out and followed him, and did not know that what was done by the angel was real, but thought he was seeing a vision.