'Pursuer' in the Bible

"'As for the ones who remain among you, I will bring despair into their hearts in the lands of their enemies. The sound of a blowing leaf will pursue them, and they will flee as one who flees the sword and fall down even though there is no pursuer.

They will stumble over each other as those who flee before a sword, though there is no pursuer, and there will be no one to take a stand for you before your enemies.

And the men of Ai look behind them, and see, and lo, the smoke of the city hath gone up unto the heavens, and there hath not been in them power to flee hither and thither -- and the people who are fleeing to the wilderness have turned against the pursuer, --

Their way is darkness and slipperiness, And a messenger of Jehovah their pursuer.

The wicked have fled and there is no pursuer. And the righteous as a young lion is confident.

[Say to the ruler] “Give us advice, make a decision [for Moab, king of Judah];Cast your shadow [over us] like night in the midst of noon;Hide the outcasts, do not betray the fugitive [to his pursuer].

And from the daughter of Zion all her beauty is departed: her princes are become like harts that find no pasture, and they are gone without strength before the pursuer.