Fear is the opposite of Faith. We are not to have any trace of fear, so God commands us frequently in the Hebrew text, Do not fear! More often it is Do not be in Awe! In the Hebrew this is a very strong command that has no direct English translation. We are absolutely forbidden to entertain even the least speck of fear. We overcome fear by staying closer to God, worshipping, reading Scripture, making the good confession, and not dwelling on negative consequences.
We are not to fear the LORD* because He is our loving Father. Where Scripture has fear of the LORD* it is talking about heathens or backsliders, as in Isa. 2:17. And the loftiness of man will be bowed down and the haughtiness of men will be made low, and the LORD* alone will be exalted in that Day. 18. And He will utterly abolish the idols. 19. And they will go into the holes of the rocks and into the caves of the earth for fear of the LORD*, and for the glory of His majesty when He arises to terribly shake the earth. Where other bibles have “fear the LORD” the correct translation is “revere the LORD!”
The expression, “spirit of fear” does not appear in Scripture, though some translations have that in 2 Tim. 1:7. There the correct translation is “spirit of timidity” in an exhortation to Timothy to use the spiritual gifts. We are to be bold in the things of the Lord, and bold in taking authority over evil spirits attacking us, but we are not to be awed or afraid of them.