Mark 9:8

9:8 Suddenly when they looked around, they saw no one with them any more except Jesus.

Luke 9:36

9:36 After the voice had spoken, Jesus was found alone. So they kept silent and told no one at that time anything of what they had seen.

Acts 12:10-11

12:10 After they had passed the first and second guards, they came to the iron gate leading into the city. It opened for them by itself, and they went outside and walked down one narrow street, when at once the angel left him. 12:11 When Peter came to himself, he said, “Now I know for certain that the Lord has sent his angel and rescued me from the hand of Herod and from everything the Jewish people were expecting to happen.”