Revelation 9:11

The locusts had a king over them--the angel of the bottomless pit, whose name in Hebrew is 'Abaddon,' while in the Greek he is called 'Apollyon.'

Ephesians 2:2

which were once habitual to you while you walked in the ways of this world and obeyed the Prince of the powers of the air, the spirits that are now at work in the hearts of the sons of disobedience--to you God has given Life.

John 8:44

The father whose sons you are is the Devil; and you desire to do what gives him pleasure. *He* was a murderer from the beginning, and does not stand firm in the truth--for there is no truth in him. Whenever he utters his lie, he utters it out of his own store; for he is a liar, and the father of lies.

John 12:31

Now is a judgement of this world: now will the Prince of this world be driven out.

John 14:30

In future I shall not talk much with you, for the Prince of this world is coming. And yet in me he has nothing;

John 16:11

of judgement, because the Prince of this world is under sentence.

2 Corinthians 4:4

in whom the god of this present age has blinded their unbelieving minds so as to shut out the sunshine of the Good News of the glory of the Christ, who is the image of God.

1 John 4:4

As for you, dear children, you are God's children, and have successfully resisted them; for greater is He who is in you than he who is in the world.

1 John 5:19

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

Revelation 9:1-2

The fifth angel blew his trumpet; and I saw a Star which had fallen from Heaven to the earth; and to him was given the key of the depths of the bottomless pit,

Revelation 12:9

The great Dragon, the ancient serpent, he who is called 'the Devil' and 'the Adversary' and leads the whole earth astray, was hurled down: he was hurled down to the earth, and his angels were hurled down 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
The great Dragon, the ancient serpent, he who is called 'the Devil' and 'the Adversary' and leads the whole earth astray, was hurled down: he was hurled down to the earth, and his angels were hurled down with him.
John 12:31
Now is a judgement of this world: now will the Prince of this world be driven out.
John 14:30
In future I shall not talk much with you, for the Prince of this world is coming. And yet in me he has nothing;
John 16:11
of judgement, because the Prince of this world is under sentence.
2 Corinthians 4:4
in whom the god of this present age has blinded their unbelieving minds so as to shut out the sunshine of the Good News of the glory of the Christ, who is the image of God.
Ephesians 2:2
which were once habitual to you while you walked in the ways of this world and obeyed the Prince of the powers of the air, the spirits that are now at work in the hearts of the sons of disobedience--to you God has given Life.
1 John 4:4
As for you, dear children, you are God's children, and have successfully resisted them; for greater is He who is in you than he who is in the world.
1 John 5:19
We know that we are children of God, and that the whole world lies in the power of the Evil one.

The angel

Revelation 9:1
The fifth angel blew his trumpet; and I saw a Star which had fallen from Heaven to the earth; and to him was given the key of the depths of the bottomless pit,

Abaddon

John 8:44
The father whose sons you are is the Devil; and you desire to do what gives him pleasure. *He* was a murderer from the beginning, and does not stand firm in the truth--for there is no truth in him. Whenever he utters his lie, he utters it out of his own store; for he is a liar, and the father of lies.