Exodus 7:7 YLT

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.

⁸  And Jehovah speaketh unto Moses and unto Aaron, saying,

⁹  'When Pharaoh speaketh unto you, saying, Give for yourselves a wonder; then thou hast said unto Aaron, Take thy rod, and cast before Pharaoh -- it becometh a monster.'