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.
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 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.
Exodus 12:17
You shall also observe the Feast of Unleavened Bread, because on this very day I brought your hosts [grouped according to tribal armies] out of the land of Egypt; therefore you shall observe this day throughout your generations as an ordinance forever.
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,
Numbers 33:1
These are the stages of the journeys of the Israelites, by which they came out of the land of Egypt by their [tribal] armies, under the leadership of Moses and Aaron.
Deuteronomy 3:18
“Then I commanded you [Reuben, Gad, and the half-tribe of Manasseh] at that time, saying, ‘The Lord your God has given you this land to possess; all you who are brave men shall cross over [the Jordan] armed before your brothers, the sons of Israel.
Deuteronomy 24:5
“When a man takes a new wife, he shall not go out [to fight] with the army nor be charged with any duty; he shall be free at home for one year and shall bring happiness to his wife whom he has taken.
2 Samuel 24:9
And Joab gave the sum of the census of the people to the king. In Israel there were 800,000 valiant men who drew the sword, and the men of Judah were 500,000.
2 Chronicles 17:13-18
He had large supplies in the cities of Judah, and soldiers, courageous men, in Jerusalem.
2 Chronicles 26:11-13
Moreover, Uzziah had an army ready for battle, which went into combat by divisions according to the number of their muster as recorded by Jeiel the scribe and Maaseiah the official, under the direction of Hananiah, one of the king’s commanders.