Biblical (fear) can mean anything from absolute terror and fright, to awe/reverence...
context-context-context -
ISA. 66:5.
Hear The Word of The LORD, you that tremble at His Word; Your brethren that hated you,
that cast you out for My Name's sake, said, Let The LORD be glorified:
but He shall appear to your joy, and they shall be ashamed.
66:2.
For all those things has My hand made, and all those things have been, saith The LORD:
but to this man will I look, even to him that is poor and of a contrite spirit,
and (trembles)= (fearful/afraid) at My Word.
NT, to 'the Church' -
REV. 2:23.
And I will kill her children with death; and all the churches shall know that I Am He
which searches the reins and hearts:
and I will give unto every one of you according to your works.
we both are in 'reverence and fear' of our Holy Creator, for we both have experienced
His Powerful Love and His Powerful rebuke'...
HEB. 12:8.
But if you be without chastisement, whereof all are partakers, then are you bastards, and not sons.
12:14.
Follow peace with all men, and Holiness, without which no man shall see The Lord:
15,
Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you,
and thereby many be defiled;
16.
Lest there be any fornicator, or profane person, as Esau, who for one morsel of meat sold his birthright.
17.
For you know how that afterward, when he would have inherited the blessing, he was rejected:
for he found no place of (repentance), though he sought it carefully with tears.
HEB. 10:29.
Of how much sorer punishment, suppose you, shall he be thought worthy, who hath trodden under foot
The Son of God, and has counted the Blood of the Covenant, wherewith he was sanctified, an unholy thing,
and hath done despite unto The Spirit of Grace?
30.
For we know Him that has said, Vengeance belongs unto Me, I will recompense, says The Lord.
And again, (The Lord shall judge His people).
31.
It is a (fearful thing) to fall into the hands of The Living God.