Luke 12:5

But I will make clear to you of whom you are to be in fear: of him who after death has power to send you to hell; yes, truly I say, Have fear of him.

Psalm 9:17

The sinners and all the nations who have no memory of God will be turned into the underworld.

Matthew 10:28

And have no fear of those who put to death the body, but are not able to put to death the soul. But have fear of him who has power to give soul and body to destruction in hell.

2 Peter 2:4

For if God did not have pity for the angels who did evil, but sent them down into hell, to be kept in chains of eternal night till they were judged;

Proverbs 14:26

For him in whose heart is the fear of the Lord there is strong hope: and his children will have a safe place.

Jeremiah 5:22

Have you no fear of me? says the Lord; will you not be shaking with fear before me, who have put the sand as a limit for the sea, by an eternal order, so that it may not go past it? and though it is ever in motion, it is not able to have its way; though the sound of its waves is loud, they are not able to go past it.

Jeremiah 10:7

Who would not have fear of you, O King of the nations? for it is your right: for among all the wise men of the nations, and in all their kingdoms, there is no one like you.

Matthew 5:22

But I say to you that everyone who is angry with his brother will be in danger of being judged; and he who says to his brother, Raca, will be in danger from the Sanhedrin; and whoever says, You foolish one, will be in danger of the hell of fire.

Matthew 25:41

Then will he say to those on the left, Go from me, you cursed ones, into the eternal fire which is ready for the Evil One and his angels:

Matthew 25:46

And these will go away into eternal punishment; but the upright into eternal life.

Mark 13:23

But take care; see, I have made all things clear to you before the time.

1 Thessalonians 4:6

And that no man may make attempts to get the better of his brother in business: for the Lord is the judge in all these things, as we said to you before and gave witness.

Hebrews 10:31

We may well go in fear of falling into the hands of the living God.

Revelation 14:7

Saying with a loud voice, Have fear of God and give him glory; because the hour of his judging is come; and give worship to him who made heaven and earth and the sea and the fountains of water.

Revelation 15:4

What man is there who will not have fear before you, O Lord, and give glory to your name? because you only are holy; for all the nations will come and give worship before you; for your righteousness has been made clear.

Revelation 20:14

And death and Hell were put into the sea of fire. This is the second death, even the sea 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 care; see, I have made all things clear to you before the time.
1 Thessalonians 4:6
And that no man may make attempts to get the better of his brother in business: for the Lord is the judge in all these things, as we said to you before and gave witness.

Power

Psalm 9:17
The sinners and all the nations who have no memory of God will be turned into the underworld.
Matthew 10:28
And have no fear of those who put to death the body, but are not able to put to death the soul. But have fear of him who has power to give soul and body to destruction in hell.
Matthew 25:41
Then will he say to those on the left, Go from me, you cursed ones, into the eternal fire which is ready for the Evil One and his angels:
2 Peter 2:4
For if God did not have pity for the angels who did evil, but sent them down into hell, to be kept in chains of eternal night till they were judged;
Revelation 20:14
And death and Hell were put into the sea of fire. This is the second death, even the sea of fire.

General references

Psalm 89:7
God is greatly to be feared among the saints, and to be honoured over all those who are about him.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain