Jeremiah 5:22
Fear ye not me? saith the LORD: will ye not tremble at my presence, which have placed the sand for the bound of the sea by a perpetual decree, that it cannot pass it: and though the waves thereof toss themselves, yet can they not prevail; though they roar, yet can they not pass over it?
The verse is a direct call from the Lord for people to fear Him and to tremble before His presence. That trembling is reverent awe in the face of divine majesty. Such reverence and awe are essential elements of worship that is acceptable to God.