Exodus 7:7
And Moses was fourscore years old, and Aaron fourscore and three years old, when they spake unto Pharaoh.
Exodus 10:9
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 the LORD.
Exodus 30:14
Every one that passeth among them that are numbered, from twenty years old and above, shall give an offering unto the LORD.
Exodus 38:26
A bekah for every man, that is, half a shekel, after the shekel of the sanctuary, for every one that went to be numbered, from twenty years old and upward, for six hundred thousand and three thousand and five hundred and fifty men.