Luke 12:5

But I will warn you whom to fear: fear the One who, after He has killed, has authority to cast into hell; yes, I tell you, fear Him!

Psalm 9:17

The wicked will return to Sheol,
Even all the nations who forget God.

Matthew 10:28

Do not fear those who kill the body but are unable to kill the soul; but rather fear Him who is able to destroy both soul and body in hell.

2 Peter 2:4

For if God did not spare angels when they sinned, but cast them into hell and committed them to pits of darkness, reserved for judgment;

Proverbs 14:26

In the fear of the Lord there is strong confidence,
And his children will have refuge.

Jeremiah 5:22

‘Do you not fear Me?’ declares the Lord.
‘Do you not tremble in My presence?
For I have placed the sand as a boundary for the sea,
An eternal decree, so it cannot cross over it.
Though the waves toss, yet they cannot prevail;
Though they roar, yet they cannot cross over it.

Jeremiah 10:7

Who would not fear You, O King of the nations?
Indeed it is Your due!
For among all the wise men of the nations
And in all their kingdoms,
There is none like You.

Matthew 5:22

But I say to you that everyone who is angry with his brother shall be guilty before the court; and whoever says to his brother, ‘You good-for-nothing,’ shall be guilty before the supreme court; and whoever says, ‘You fool,’ shall be guilty enough to go into the fiery hell.

Matthew 25:41

“Then He will also say to those on His left, ‘Depart from Me, accursed ones, into the eternal fire which has been prepared for the devil and his angels;

Matthew 25:46

These will go away into eternal punishment, but the righteous into eternal life.”

Mark 13:23

But take heed; behold, I have told you everything in advance.

1 Thessalonians 4:6

and that no man transgress and defraud his brother in the matter because the Lord is the avenger in all these things, just as we also told you before and solemnly warned you.

Hebrews 10:31

It is a terrifying thing to fall into the hands of the living God.

Revelation 14:7

and he said with a loud voice, “Fear God, and give Him glory, because the hour of His judgment has come; worship Him who made the heaven and the earth and sea and springs of waters.”

Revelation 15:4

Who will not fear, O Lord, and glorify Your name?
For You alone are holy;
For all the nations will come and worship before You,
For Your righteous acts have been revealed.”

Revelation 20:14

Then death and Hades were thrown into the lake of fire. This is the second death, the lake of fire.

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.

General references

Bible References

Forewarn

Mark 13:23
But take heed; behold, I have told you everything in advance.
1 Thessalonians 4:6
and that no man transgress and defraud his brother in the matter because the Lord is the avenger in all these things, just as we also told you before and solemnly warned you.

Power

Psalm 9:17
The wicked will return to Sheol,
Even all the nations who forget God.
Matthew 10:28
Do not fear those who kill the body but are unable to kill the soul; but rather fear Him who is able to destroy both soul and body in hell.
Matthew 25:41
“Then He will also say to those on His left, ‘Depart from Me, accursed ones, into the eternal fire which has been prepared for the devil and his angels;
2 Peter 2:4
For if God did not spare angels when they sinned, but cast them into hell and committed them to pits of darkness, reserved for judgment;
Revelation 20:14
Then death and Hades were thrown into the lake of fire. This is the second death, the lake of fire.

General references

Psalm 89:7
A God greatly feared in the council of the holy ones,
And awesome above all those who are around Him?
Psalm 90:11
Who understands the power of Your anger
And Your fury, according to the fear that is due You?