'Old' in the Bible

And Moses was fourscore years old, and Aaron fourscore and three years old, when they spake unto Pharaoh.

And 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 unto Jehovah.

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

Now this is that which thou shalt offer upon the altar: two lambs a year old day by day continually.

Every one that passeth over unto them that are numbered, from twenty years old and upward, shall give the offering of Jehovah.

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