Acts 12:2-7
English Standard Version
Chapter 12
2He killed James the brother of John with the sword, 3and when he saw that it pleased the Jews, he proceeded to arrest Peter also. This was during the days of Unleavened Bread. 4And when he had seized him, he put him in prison, delivering him over to four squads of soldiers to guard him, intending after the Passover to bring him out to the people. 5So Peter was kept in prison, but earnest prayer for him was made to God by the church.
6Now when Herod was about to bring him out, on that very night, Peter was sleeping between two soldiers, bound with two chains, and sentries before the door were guarding the prison.
7And behold, an angel of the Lord stood next to him, and a light shone in the cell. He struck Peter on the side and woke him, saying, "Get up quickly." And the chains fell off his hands.