Monergism

The ten plagues were employed to expose the emptiness of evil, to purge the Hebrew minds of all envious admiration of evil, to systematically demolish every god-delusion or god-pretention that evil uses to exercise power over men and women. … Each of the ten plagues was an ammonia-laced scrub-bucket of suds for just such a cleaning. …

The ten plagues were an elaborate exorcism, a casting out of the demons, that freed the imagination of the Hebrews form domination by evil so that they were free to hear and follow their Savior and worship God “in spirit and truth” (John 4:24). When Moses began his work with his Hebrew brothers and sisters, their spirits were “broken” (Exod. 6:9) and the only “truth” they had access to was this huge Egyptian lie. But Egypt and Pharaoh were not the “real world.” They were the real world defaced, desecrated, demonized. … The exorcising drama of the ten plagues freed the Brews from this Egyptian way of understanding reality, clearing the mind to accept God’s revelation reality, energizing their spirits to live in the world of salvation. The intent was that by the time they left Egypt, they would not only be physically free of the evil oppression but mentally free of the evil imagination that had crushed the life out of them for so long. The ten plagues would cleanse the “doors of perception” so that Israel could see life in a totally different way – the unreality of Egypt exposed; the untruth of Egypt laid bare – and would set them free to live a different life when they get out of Egypt, free to live the freedom of salvation.

Eugene Peterson Christ Plays in Ten Thousand Places (pg. 162-63)