'Old' in the Bible

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

Moses said, “We will go with our young and our old, with our sons and our daughters, with our flocks and our herds [all of us and all that we have], for we must hold a feast to the Lord.”

“Now this is what you shall offer on the altar: two one year old lambs shall be offered each day, continuously.

Everyone who is counted, from twenty years old and over, [as he joins those already counted], shall give this contribution to the Lord.

a beka for each man (that is, half a shekel according to the shekel of the sanctuary) for everyone who was counted, from twenty years old and upward, for 603,550 men.