Acts 12:7 in the World English Bible
And behold, an angel of the Lord stood by him, and a light shone in the cell. He struck Peter on the side and woke him up, saying, “Stand up quickly!” His chains fell off his hands.
Context
6 And when Herod would have brought him forth, the same night Peter was sleeping between two soldiers, bound with two chains: and the keepers before the door kept the prison.
7 And, behold, the angel of the Lord came upon him, and a light shined in the prison: and he smote Peter on the side, and raised him up, saying, Arise up quickly. And his chains fell off from his hands.
8 And the angel said unto him, Gird thyself, and bind on thy sandals. And so he did. And he saith unto him, Cast thy garment about thee, and follow me.