Deuteronomy 31:2

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

who will go out and come in before them, and who will lead them out and bring them in, so that the congregation of Yahweh will not be like sheep which have no shepherd.”

Now Moses was 120 years old when he died; his eye was not dim, nor his vigor abated.

“I am still as strong today as I was in the day Moses sent me; as my strength was then, so my strength is now, for war and for going out and coming in.