2 Corinthians 5:10-11 (KJV)
"10 For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, according to that he hath done, whether it be good or bad.
11 Knowing therefore the terror of the Lord, we persuade men; but we are made manifest unto God; and I trust also are made manifest in your consciences."
The fear of the LORD is essential and necessary - we cannot know God as we should without it and we sure cannot translate the terror of the LORD to others without it.