'Old' in the Bible

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 with our old; with our sons and with our daughters, with our flocks and with our herds will we go; for we must hold a feast to Yahweh."

Your lamb shall be without blemish, a male a year old. You shall take it from the sheep, or from the goats:

"Now this is that which you shall offer on the altar: two lambs a year old day by day continually.

Everyone who passes over to those who are numbered, from twenty years old and upward, shall give the offering to Yahweh.

a beka a head, that is, half a shekel, after the shekel of the sanctuary, for everyone who passed over to those who were numbered, from twenty years old and upward, for six hundred three thousand five hundred fifty men.