I beheld Satan.

John 12:31
Now judgment is upon this world; now the prince of this world will be cast out.

John 16:11
and in regard to judgment, because the prince of this world has been condemned.

Hebrews 2:14
Therefore, since the children have flesh and blood, He too shared in their humanity, so that by His death He might destroy him who holds the power of death, that is, the devil,

1 John 3:8
The one who practices sin is of the devil, because the devil has been sinning from the very start. This is why the Son of God was revealed, to destroy the works of the devil.

Revelation 9:1
Then the fifth angel sounded his trumpet, and I saw a star that had fallen from heaven to earth, and it was given the key to the pit of the Abyss.

Revelation 12:7-9
Then a war broke out in heaven: Michael and his angels fought against the dragon, and the dragon and his angels fought back. . . .

Revelation 20:2
He seized the dragon, the ancient serpent who is the devil and Satan, and bound him for a thousand years.