Adam Clarke

The prison truly found we shut - All the doors were properly bolted, and the keepers at their post; but when we had opened, for it appears they were alone in possession of the keys; how much must this have increased their astonishment when they found that the doors were not broken open, the guards properly posted, and every thing as they left it, for they themselves had put the apostles in prison; but, when they had opened, there was no man within!