Plagues of Egypt
The plagues of Egypt (Ex. 7-12) were ten successive divine judgments executed through Moses and Aaron against Pharaoh and Egypt, escalating in severity until Pharaoh released Israel from slavery: (1) water turned to blood; (2) frogs; (3) gnats/lice; (4) flies; (5) livestock disease; (6) boils; (7) hail; (8) locusts; (9) darkness; (10) death of all firstborns. From the fourth plague onward, the Israelites in Goshen were exempted (Ex. 8:22-23; 9:4, 26), distinguishing God's people from Egypt. Exodus presents the plagues as a systematic confrontation with Egyptian religion: 'I will bring judgment on all the gods of Egypt' (Ex. 12:12) — the Nile's transformation challenging Hapi the Nile-god, the darkness challenging Ra the sun-god, and the death of firstborns constituting judgment on Pharaoh himself as divine son.
The narrative of Pharaoh's hardening heart — alternately Pharaoh hardening his own heart (Ex. 8:15, 32; 9:34) and God hardening it (Ex. 9:12; 10:1, 20) — raises the theological question Paul addresses in Romans 9:17-18, where Pharaoh becomes the paradigm case for divine sovereignty in hardening and mercy: 'For this very purpose I raised you up, that I might display my power in you, and that my name might be proclaimed in all the earth.' Psalms 78 and 105 retell the plagues within Israel's covenant history as evidence of God's faithfulness. The NT's eschatological vision in Revelation deliberately echoes the plague sequence in the trumpet (Rev. 8-9) and bowl (Rev. 16) judgments, presenting the final judgment on the enemies of God's people as the definitive, cosmic fulfillment of the Exodus pattern.