² He opened the bottomless pit, and smoke like the smoke of a great furnace flowed out of the pit; and the sun and the atmosphere were darkened by the smoke from the pit.^(A)

Satan Bound

20 ^[a]And then I saw an angel descending from heaven, holding the key of the abyss (the bottomless pit) and a great chain was in his hand. ² And he overpowered and laid hold of the dragon, that old serpent [of primeval times], who is the devil and Satan, and bound him [securely] for a thousand years (a millennium);^(A)