Exodus 7:5 YLT

³  'And I harden the heart of Pharaoh, and have multiplied My signs and My wonders in the land of Egypt,

⁴  and Pharaoh doth not hearken, and I have put My hand on Egypt, and have brought out My hosts, My people, the sons of Israel, from the land of Egypt by great judgments;

⁵  and the Egyptians have known that I 'am' Jehovah, in My stretching out My hand against Egypt; and I have brought out the sons of Israel from their midst.'

⁶  And Moses doth -- Aaron also -- as Jehovah commanded them; so have they done;

⁷  and Moses 'is' a son of eighty years, and Aaron 'is' a son of eighty and three years, in their speaking unto Pharaoh.