'Oppressor' in the Bible

For their oppressive yoke and the club that strikes their shoulders, the cudgel the oppressor uses on them, you have shattered, as in the day of Midian's defeat.

you will taunt the king of Babylon with these words: "Look how the oppressor has met his end! Hostility has ceased!

Why do you forget the Lord, who made you, who stretched out the sky and founded the earth? Why do you constantly tremble all day long at the anger of the oppressor, when he makes plans to destroy? Where is the anger of the oppressor?