Exodus 7:3-5

New Century Version

³ But I will make the king stubborn. I will do many miracles in Egypt, ⁴ but he will still refuse to listen. So then I will punish Egypt terribly, and I will lead my divisions, my people the Israelites, out of that land. ⁵ I will punish Egypt with my power, and I will bring the Israelites out of that land. Then they will know I am the Lord.”