Acts 12:7

12:7 Suddenly an angel of the Lord appeared, and a light shone in the prison cell. He struck Peter on the side and woke him up, saying, “Get up quickly!” And the chains fell off Peter’s wrists.

Acts 12:10

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.