'Old' in the Bible

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

Moses said, “We shall go with our young and our old; with our sons and our daughters, with our flocks and our herds we shall go, for we must hold a feast to the Lord.”

Your lamb shall be an unblemished male a year old; you may take it from the sheep or from the goats.

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

Everyone who is numbered, from twenty years old and over, shall give the contribution to the Lord.

a beka a head (that is, half a shekel according to the shekel of the sanctuary), for each one who passed over to those who were numbered, from twenty years old and upward, for 603,550 men.