Luke
Acts 12:7ESV·traditional attribution

And 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.

John Calvin Reformed @genevareformer

7. A light shined, It is to be thought that Peter alone saw this light, and that the soldiers did either sleep so soundly, or else were so amazed, that they neither felt nor perceived any thing, And there might be two causes why God would have the light to shine; either that Peter might have the use thereof, and that the darkness might be...

Matthew Henry Presbyterian @wholebiblehenry

We have here an account of Peter's deliverance out of prison, by which the design of Herod against him was defeated, and his life preserved for further service, and a stop given to this bloody torrent. Now, I. One thing that magnified his deliverance was that it was a signal answer to prayer (Act 12:5): Peter was kept in prison with a great deal of...

Commenting on Acts 12:5-19

John Gill Reformed Baptist @doctorgill

And behold, the angel of the Lord came upon him,.... Suddenly and at once, and stood by him; this was one of the ministering spirits sent forth by Christ, to minister to a servant of his: and a light shined in the prison; the Syriac version renders it, "in the whole house"; and the word that is used does signify an habitation, or a dwelling...