Exodus 30:14
And all that are numbered of them that are twenty years old and above shall give a heave offering unto the LORD.
Numbers 1:3
from twenty years and above: even all that are able to go forth into war in Israel, thou and Aaron shall number them in their armies.
Numbers 1:18
and gathered all the congregation together, the first day of the second month, and reckoned them after their birth and kindreds and houses of their fathers by name from twenty years and above, head by head;
Numbers 1:20
And the children of Reuben, Israel's eldest son, in their generations, kindreds and houses of their fathers - when they were numbered every man by name, all that were males from twenty years and above, as many as were able to go forth in war -
Numbers 14:29
Your carcasses shall lie in this wilderness, neither shall any of these numbers which were numbered from twenty years and above of you which have murmured against me
Numbers 26:2
"Take the number of all the multitude of the children of Israel from twenty years and above throughout their fathers' houses, all that are able to go to war in Israel."
Numbers 32:11
'None of the men that came out of Egypt, from twenty years old and above, shall see the land which I swore unto Abraham, Isaac and Jacob, because they have not continually followed me: