And Moses was {c} fourscore years old, and Aaron fourscore and three years old, when they spake unto Pharaoh.

(c) Moses lived in affliction and banishment forty years before he commanded his office to deliver God's people.

Wesley's Notes

7:7 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.

Jamieson-Fausset-Brown Bible Commentary

7. Moses was fourscore years old-This advanced age was a pledge that they had not been readily betrayed into a rash or hazardous enterprise, and that under its attendant infirmities they could not have carried through the work on which they were entering had they not been supported by a divine hand.

Matthew Henry's Concise Commentary

7:1-7 God glorifies himself. He makes people know that he is Jehovah. Israel is made to know it by the performance of his promises to them, and the Egyptians by the pouring out of his wrath upon them. Moses, as the ambassador of Jehovah, speaking in his name, laid commands upon Pharaoh, denounced threatenings against him, and called for judgments upon him. Pharaoh, proud and great as he was, could not resist. Moses stood not in awe of Pharaoh, but made him tremble. This seems to be meant in the words, Thou shalt be a god unto Pharaoh. At length Moses is delivered from his fears. He makes no more objections, but, being strengthened in faith, goes about his work with courage, and proceeds in it with perseverance.