Exodus 9:30

I know that ye will not yet fear. Moses, knowing that the king’s attitude would remain as adamant as ever, once bold enough to express his conviction of that fact in the presence of the king. True fear of God is shown by obedience to His commandments, but Pharaoh’s fear was of the kind the devils feel, for they “also believe, and tremble” (James 2:19). Devout fear leads to obedience, but the fear in Pharaoh’s heart led him to false promises and greater sin. Genuine “fear of the Lord” is not the cringing fear felt by Pharaoh, but a spirit of reverent awe resulting from awareness of God’s sublime majesty and power.