Cross reference
Matthew 17:8
8 And lifting up their eyes, they saw no one, save Jesus only.
Mark 9:8
8 And suddenly looking round about, they saw no one any more, save Jesus only with themselves.
Luke 9:36
36 And when the voice came, Jesus was found alone. And they held their peace, and told no man in those days any of the things which they had seen.
Acts 12:10-11
10 And when they were past the first and the second guard, they came unto the iron gate that leadeth into the city; which opened to them of its own accord: and they went out, and passed on through one street; and straightway the angel departed from him.
11 And when Peter was come to himself, he said, Now I know of a truth, that the Lord hath sent forth his angel and delivered me out of the hand of Herod, and from all the expectation of the people of the Jews.