Revelation 9:11

They have a king over them, the angel of the abyss: his name in Hebrew, Abaddon, and in Greek he has for name Apollyon.

Ephesians 2:2

in which ye once walked according to the age of this world, according to the ruler of the authority of the air, the spirit who now works in the sons of disobedience:

Job 26:6

Sheol is naked before him, and destruction hath no covering.

John 8:44

Ye are of the devil, as your father, and ye desire to do the lusts of your father. He was a murderer from the beginning, and has not stood in the truth, because there is no truth in him. When he speaks falsehood, he speaks of what is his own; for he is a liar and its father:

John 12:31

Now is the judgment of this world; now shall the prince of this world be cast out:

John 14:30

I will no longer speak much with you, for the ruler of the world comes, and in me he has nothing;

John 16:11

of judgment, because the ruler of this world is judged.

2 Corinthians 4:4

in whom the god of this world has blinded the thoughts of the unbelieving, so that the radiancy of the glad tidings of the glory of the Christ, who is the image of God, should not shine forth for them.

1 John 4:4

Ye are of God, children, and have overcome them, because greater is he that is in you than he that is in the world.

1 John 5:19

We know that we are of God, and the whole world lies in the wicked one.

Revelation 9:1-2

And the fifth angel sounded his trumpet: and I saw a star out of the heaven fallen to the earth; and there was given to it the key of the pit of the abyss.

Revelation 12:9

And the great dragon was cast out, the ancient serpent, he who is called Devil and Satan, he who deceives the whole habitable world, he was cast out into the earth, and his angels were cast out with him.

Treasury of Scripture Knowledge

Summary

And they had a king over them, which is the angel of the bottomless pit, whose name in the Hebrew tongue is Abaddon, but in the Greek tongue hath his name Apollyon.

The angel

Abaddon

Bible References

They had

Revelation 12:9
And the great dragon was cast out, the ancient serpent, he who is called Devil and Satan, he who deceives the whole habitable world, he was cast out into the earth, and his angels were cast out with him.
John 12:31
Now is the judgment of this world; now shall the prince of this world be cast out:
John 14:30
I will no longer speak much with you, for the ruler of the world comes, and in me he has nothing;
John 16:11
of judgment, because the ruler of this world is judged.
2 Corinthians 4:4
in whom the god of this world has blinded the thoughts of the unbelieving, so that the radiancy of the glad tidings of the glory of the Christ, who is the image of God, should not shine forth for them.
Ephesians 2:2
in which ye once walked according to the age of this world, according to the ruler of the authority of the air, the spirit who now works in the sons of disobedience:
1 John 4:4
Ye are of God, children, and have overcome them, because greater is he that is in you than he that is in the world.
1 John 5:19
We know that we are of God, and the whole world lies in the wicked one.

The angel

Revelation 9:1
And the fifth angel sounded his trumpet: and I saw a star out of the heaven fallen to the earth; and there was given to it the key of the pit of the abyss.

Abaddon

John 8:44
Ye are of the devil, as your father, and ye desire to do the lusts of your father. He was a murderer from the beginning, and has not stood in the truth, because there is no truth in him. When he speaks falsehood, he speaks of what is his own; for he is a liar and its father: