Exodus 11:9-10

New Living Translation

⁹ Now the Lord had told Moses earlier, “Pharaoh will not listen to you, but then I will do even more mighty miracles in the land of Egypt.” ¹⁰ Moses and Aaron performed these miracles in Pharaoh’s presence, but the Lord hardened Pharaoh’s heart, and he wouldn’t let the Israelites leave the country.