Exodus 7:3-5

Thomson(i) 3 But I will let Pharao's heart be stubborn, and I will multiply my signs and wonders in the land of Egypt. 4 And when Pharao will not hearken to you, I will lay my hand upon Egypt and bring out my people, the children of Israel with my host out of the land of Egypt with great vengeance. 5 And all the Egyptians shall know that I am the Lord when I lay my hand on Egypt and bring the children of Israel out from among them.