Adam Clarke's Bible Commentary Verse 7. Moses was fourscore years old] He was forty years old when he went to Midian, and he had tarried forty years in Midian; (see chap. ii. 11, and Acts vii. 30;) and from this verse it appears that Aaron was three years older than Moses. We have already seen that Miriam their sister was older than either, chap. ii. 4.
Matthew Henry Commentary
Verses 1-7 - God glorifies himself. He makes people know that he is Jehovah. Israe 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 upo Pharaoh, denounced threatenings against him, and called for judgment upon him. Pharaoh, proud and great as he was, could not resist. Mose 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 Mose is delivered from his fears. He makes no more objections, but, being strengthened in faith, goes about his work with courage, and proceed in it with perseverance.
Original Hebrew ומשׁה4872 בן1121 שׁמנים8084 שׁנה8141 ואהרן175 בן1121 שׁלשׁ7969 ושׁמנים8084 שׁנה8141 בדברם1696 אל413 פרעה׃6547