Moses
Exodus 7:7ESV·traditional attribution

Now Moses was eighty years old, and Aaron eighty-three years old, when they spoke to Pharaoh.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. God encourages Moses to go to Pharaoh, and at last silences all his discouragements. 1. He clothes him with great power and authority (Exo 7:1): I have made thee a god to Pharaoh; that is, my representative in this affair, as magistrates are called gods, because they are God's viceregents.

Commenting on Exodus 7:1-7

John Gill Reformed Baptist @doctorgill

And Moses was eighty years old,.... At this time, which is observed partly to show how long Israel had been afflicted in Egypt; for their great troubles and miseries began about the time of the birth of Moses, or a little before, as appears from the above history; and partly to show the patience and forbearance of God with the Egyptians, and how just and...

Jamieson-Fausset-Brown Reformed @jfbcommentary

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.