Hebrews 10:27

but a fearful expectation of judgment, and a fury of fire which will consume the adversaries.

Hebrews 10:31

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

Revelation 6:15-17

Then the kings of the earth and the great men and the generals and the rich and the strong, and every one, slave and free, hid in the caves and among the rocks of the mountains,

Treasury of Scripture Knowledge

Summary

That they feared greatly, because Gibeon was a great city, as one of the royal cities, and because it was greater than Ai, and all the men thereof were mighty.

Bible References

They feared

Hebrews 10:27
but a fearful expectation of judgment, and a fury of fire which will consume the adversaries.
Revelation 6:15
Then the kings of the earth and the great men and the generals and the rich and the strong, and every one, slave and free, hid in the caves and among the rocks of the mountains,