Exodus 7:3-5

New Catholic Bible

³ But I will harden Pharaoh’s heart and I will multiply my signs and wonders in the land of Egypt. ⁴ Pharaoh will not listen to you, and I will lay my hand upon Egypt and I will make my hosts leave Egypt, the children of Israel, with great acts of judgment.

⁵ “The Egyptians will know that I am the Lord, when I stretch out my hand against Egypt and bring the children of Israel out from their midst.”