And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.
All Commentaries on Revelation 20:1 Go To Revelation 20
Thietland of Einsiedeln
AD 1000
key to the bottomless pit. this is because he has in his power the hearts of those whom he hardens, and of those whom he opens to believing. The bottomeless pit is the great number of the faithful peoples, because just as it is incomprehensible, so also is the great number of peoples.