Exodus 30:14
Everyone who is counted, from twenty years old and over, [as he joins those already counted], shall give this contribution to the Lord.
Numbers 1:3
from twenty years old and upward, all in Israel who are able to go out to war. You and Aaron shall number them, army by army.
Numbers 1:18
and assembled all the congregation on the first day of the second month, and they registered by ancestry in their families (clans), by their fathers’ households, according to the number of names from twenty years old and upward, head by head,
Numbers 1:20
The sons of Reuben, Israel’s (Jacob’s) firstborn, their generations, by their families (clans), by their fathers’ households, according to the number of names, head by head, every male from twenty years old and upward, all who were able to go to war:
Numbers 14:29
your dead bodies will fall in this wilderness, even all who were numbered of you, your entire number from twenty years old and upward, who have murmured against Me.
Numbers 26:2
“Take a census of all the [males in the] congregation of the sons of Israel from twenty years old and upward, by their fathers’ households, all in Israel who are able to go to war.”
Numbers 32:11
‘None of the men who came up from Egypt, from twenty years old and upward, shall see the land which I promised to Abraham, to Isaac, and to Jacob, because they have not followed Me completely,