Moses was fourscore years old — Joseph, who was to be only a servant to Pharaoh, was preferred at thirty years old; but Moses, who was to be a god to Pharaoh, was not so dignified till he was eighty years old. It is fit he should long wait for such an honour, and be long in preparing for such a service.
Related Commentaries of Exodus 7:7
Exodus 7:7
7 And Moses was fourscore years old, and Aaron fourscore and three years old, when they spake unto Pharaoh.