An angel for the angel, A.V. (see note on Acts 5:19); stood by him for came upon him, A.V. (comp. Luke 2:9); cell for prison, A.V.; awoke him for raised him up, A.V. ( ἤγειρεν αὐτὸν); rise for arise, A.
V. Cell. The word οἴκημα, a dwelling, was used by the Athenians as an euphemism for a prison. It only occurs here in the New Testament, though it is a common Greek word. His chains fell off from his hands, showing that each hand bad been chained to a soldier.
The loosening of the chains would enable him to rise without necessarily awakening the soldiers to whom he was fastened, and who would feel no difference in the chain which was attached to them.