1 Bible Verses about Angels, Important Events

And I saw an angel descending from heaven, who had the key of the abyss, and a great chain in his hand. And he laid hold on the dragon, that old serpent, who is the Devil, and Satan, and bound him for a thousand years; and he cast him into the abyss, and shut him down, and set a seal upon him, that he might not deceive the nations any more, till the thousand years were accomplished; and then he must be loosed again for a little time.