Exodus 7:4-6

Amplified Bible

⁴ But Pharaoh will not listen to you, and I shall lay My hand on Egypt and bring out My hosts [like a defensive army, tribe by tribe], My people the children of Israel, out of the land of Egypt by great acts of judgment (the plagues). ⁵ The Egyptians shall know that I am the Lord, when I stretch out My hand on Egypt and bring out the children of Israel from among them.” ⁶ And Moses and Aaron did so; just as the Lord commanded them, so they did.