Exodus 6:6
6 Say therefore to the people of Israel, m‘I am the Lord, and nI will bring you out from under the burdens of the Egyptians, and I will deliver you from slavery to them, and oI will redeem you with an outstretched arm and with great acts of judgment.
Exodus 7:4
4 Pharaoh will not listen to you. Then I will lay my hand on Egypt and bring my hosts, my people the children of Israel, out of the land of Egypt by great acts of judgment.