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;

Bible References

Spared

2 Peter 2:5
and if He did not spare the ancient world of Noah's day, when He brought a flood on those ungodly people (though Noah, a preacher of righteousness, and seven other people, were saved from it);
Romans 8:32
God did not withhold His own Son [from dying], but offered Him up for all of us. [Since He did that], will He not, along with Jesus, freely give us everything [else] also?
Romans 11:21
For if God did not spare the natural branches [i.e., the Jews], He will not spare you [Gentiles] either.

The angels

Luke 10:18
And Jesus said to them, "I saw Satan falling from heaven as lightning.
John 8:44
You belong to your father the devil, and you are [always] wanting to do what your father desires. He was a murderer from the [very] beginning [Note: This is probably a reference to Satan's influence on Adam, Eve and Cain in the Garden of Eden] and does not stand for the truth, because there is no truth in him. When he lies, he only speaks what is part of his nature, because he is a liar and the father of [all] liars.
1 John 3:8
[But] the person who continues to live a sinful life belongs to the devil, because the devil has continued to sin since the beginning [See Gen. 3]. For this is the reason that the Son of God came [into the world]; it was to destroy the works [i.e., the influence of] the devil [in people's lives].
Jude 1:6
And angels, who did not remain within [the bounds of] their proper authority, but left their own realm, God has kept in perpetual bondage, under [thick] darkness, awaiting judgment on the Great Day [when they will be punished].

But

Matthew 8:29
Suddenly they shouted out, "What do you want with us, you Son of God? Have you come here to torture us before it is time to?" [i.e., before our punishment is due. See II Pet. 2:4; Jude 6].
Matthew 25:41
Then He [i.e., the King] will say to those at His left side, 'Go away from me, you who are cursed [by God], into the never ending fire which is prepared for the devil and his angels.
Mark 5:7
And shouting with a loud voice, he said, "What do you want with me, Jesus, Son of the Most High God? I beg you, in God's name, do not torture me."
Luke 8:31
And the evil spirits begged Jesus not to require them to go away into the "pit" [Note: This appears to be the place reserved for the devil and his evil spirits. See Rev. 9:1-11; 20:1-3].
Revelation 12:7
Then there was a war in heaven. Michael [See Dan. 10:13; 12:1; Jude 9] and his angels waged war against the dragon [See verse 9]; and the dragon and his angels fought back.
Revelation 20:2
And he took hold of the dragon, that old snake, who is the devil or Satan, and chained him up for a thousand years.

Into

2 Peter 2:11
while [those] angels, who are greater in strength and power than they, refuse to speak against such authorities, in condemnation, before the Lord.
Jude 1:6
And angels, who did not remain within [the bounds of] their proper authority, but left their own realm, God has kept in perpetual bondage, under [thick] darkness, awaiting judgment on the Great Day [when they will be punished].

To be

2 Peter 2:9
then the Lord [surely] knows how to rescue godly people from trying situations, and to keep unrighteous people under [a sentence of] punishment [to be received] on the judgment day.
Jude 1:13
[They are like] raging ocean waves, whose shameful actions bubble up like foam. [They are like] shooting stars [whose light quickly goes out], for whom total darkness has been reserved forever.