2 Peter 2:4

For God, indeed, did not spare the angels who sinned, but with chains of darkness confining them in Tartarus, delivered them over to be kept for judgment;

Jude 1:6

Also, the angels who kept not their first estate, but left their proper habitation, he has reserved in everlasting chains, under darkness, to the judgment of the great day.

Revelation 20:10

And the devil, who had deceived them, was cast into the lake of fire and brimstone, where the beast and the false prophet were: and they shall be tormented day and night for ages and ages.

Revelation 12:7-9

And there was war in heaven: Michael and his angels made war against the dragon; and the dragon made war, and his angels:

2 Peter 2:5

and did not spare the old world, but saved Noah, the eighth, a proclaimer of righteousness, when he brought the flood upon the world of the ungodly;

2 Peter 2:9

the Lord knows how to rescue the godly out of temptation, and to reserve the unrighteous to a day of judgment to be punished;

2 Peter 2:11

whereas, angels, who are greater in strength and power, do not bring a reviling accusation against them before the Lord.

1 John 3:8

He who works sin, is of the devil; for the devil sins from the beginning. For this purpose, the Son of God was manifested, that he might destroy the works of the devil.

Jude 1:13

raging waves of the sea, foaming out their own shame; wandering stars, for whom the blackness of darkness for ever is reserved.

Revelation 20:1-3

And I saw an angel descending from heaven, who had the key of the abyss, and a great chain in his hand.

Treasury of Scripture Knowledge

Summary

For if God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment;

Spared

The angels

Bible References

Spared

2 Peter 2:5
and did not spare the old world, but saved Noah, the eighth, a proclaimer of righteousness, when he brought the flood upon the world of the ungodly;

The angels

1 John 3:8
He who works sin, is of the devil; for the devil sins from the beginning. For this purpose, the Son of God was manifested, that he might destroy the works of the devil.
Jude 1:6
Also, the angels who kept not their first estate, but left their proper habitation, he has reserved in everlasting chains, under darkness, to the judgment of the great day.

But

Revelation 12:7
And there was war in heaven: Michael and his angels made war against the dragon; and the dragon made war, and his angels:
Revelation 20:2
And he laid hold on the dragon, that old serpent, who is the Devil, and Satan, and bound him for a thousand years;

Into

2 Peter 2:11
whereas, angels, who are greater in strength and power, do not bring a reviling accusation against them before the Lord.
Jude 1:6
Also, the angels who kept not their first estate, but left their proper habitation, he has reserved in everlasting chains, under darkness, to the judgment of the great day.

To be

2 Peter 2:9
the Lord knows how to rescue the godly out of temptation, and to reserve the unrighteous to a day of judgment to be punished;
Jude 1:13
raging waves of the sea, foaming out their own shame; wandering stars, for whom the blackness of darkness for ever is reserved.