The Hebrew word pachad (פָּחַד) as a verb means to tremble, to be in dread or awe, to fear greatly. As a noun it means dread, sudden terror, or the object of fear. It is used for both creaturely fear of God and the terror of judgment, as well as the godly fear that leads to obedience and worship.
Pachad captures the visceral, trembling quality of the fear of God. Job 3:25 reveals that what Job deeply feared came upon him — showing that anxiety-driven fear differs from trusting fear of God. Isaiah 2:10,19 describes the terrifying pachad of the Lord's Day of Judgment. Proverbs 1:33 promises that those who listen to wisdom will live in safety and be at ease, without fear of harm. The contrast throughout Scripture is between slavish, creaturely terror and the holy reverence-fear that produces life. 'The fear of the LORD is the beginning of wisdom' (Proverbs 9:10).