What single angel would be capable of defeating Satan and casting him into the pit?
"And I saw an angel coming down out of heaven with the key of the abyss and a great chain in his hand. And he seized the dragon, the original serpent, who is the Devil and Satan, and bound him for a thousand years. And he hurled him into the abyss and shut [it] and sealed [it] over him, that he might not mislead the nations anymore until the thousand years were ended. After these things he must be let loose for a little while." (Rev. 20:1-3)