Found we shut - It had not been broken open; and there was therefore clear proof that they had been delivered by the interposition of God. Nor could they have been released by the guard, for they were keeping watch, as if unconscious that anything had happened, and the officers had the only means of entering the prison.
Related Commentaries of Acts 5:23
Acts 5:23
23 Saying, The prison truly found we shut with all safety, and the keepers standing without before the doors: but when we had opened, we found no man within.