Luke 12:5

I will show you whom to fear: fear him who, after killing you, has power to hurl you into the pit. Yes, fear him, I tell you.

Matthew 10:28

Have no fear of those who kill the body, but cannot kill the soul. You had better be afraid of one who can destroy both soul and body in the pit.

2 Peter 2:4

For if God did not spare angels when they sinned, but plunged them into Tartarus, and committed them to dark dungeons to await their doom,

Matthew 5:22

But I tell you that anyone who gets angry with his brother will have to answer to the court, and anyone who speaks contemptuously to his brother will have to answer to the great council, and anyone who says to his brother 'You cursed fool!' will have to answer for it in the fiery pit!

Matthew 25:41

Then he will say to those at his left, 'Begone, you accursed people, to the everlasting fire destined for the devil and his angels!

Matthew 25:46

Then they will go away to everlasting punishment, and the upright to everlasting life."

Mark 13:23

But you must be on your guard; I have told you all about it beforehand.

1 Thessalonians 4:6

No one is to wrong or defraud his brother in this matter, for the Lord avenges all such things, as we told you before, in the most solemn terms.

Hebrews 10:31

It is a fearful thing to fall into the hands of the living God!

Revelation 14:7

He cried in a loud voice, "Fear God and give him glory, for the hour for his judgment has come. Worship him who made heaven and earth and sea and the springs of water."

Revelation 15:4

Who will not fear and give glory to your name, Lord? For you alone are holy. All the heathen will come and worship before you, for the justice of your sentences has now been shown."

Revelation 20:14

Then death and Hades were flung into the fiery lake. This is the second death??he fiery lake.

Treasury of Scripture Knowledge

Summary

But I will forewarn you whom ye shall fear: Fear him, which after he hath killed hath power to cast into hell; yea, I say unto you, Fear him.

Bible References

Forewarn

Mark 13:23
But you must be on your guard; I have told you all about it beforehand.
1 Thessalonians 4:6
No one is to wrong or defraud his brother in this matter, for the Lord avenges all such things, as we told you before, in the most solemn terms.

Power

Matthew 10:28
Have no fear of those who kill the body, but cannot kill the soul. You had better be afraid of one who can destroy both soul and body in the pit.
Matthew 25:41
Then he will say to those at his left, 'Begone, you accursed people, to the everlasting fire destined for the devil and his angels!
2 Peter 2:4
For if God did not spare angels when they sinned, but plunged them into Tartarus, and committed them to dark dungeons to await their doom,
Revelation 20:14
Then death and Hades were flung into the fiery lake. This is the second death??he fiery lake.