1 Chronicles 23:24
These were the descendants of Levi according to their families, that is, the leaders of families as counted and individually listed who carried out assigned tasks in the Lord's temple and were twenty years old and up.
Numbers 10:17
Then the tabernacle was dismantled, and the sons of Gershon and the sons of Merari set out, carrying the tabernacle.
Numbers 10:21
And the Kohathites set out, carrying the articles for the sanctuary; the tabernacle was to be set up before they arrived.
1 Chronicles 23:3
The Levites who were thirty years old and up were counted; there were 38,000 men.
Numbers 4:3
from thirty years old and upward to fifty years old, all who enter the company to do the work in the tent of meeting.
Numbers 8:24
"This is what pertains to the Levites: At the age of twenty-five years and upward one may begin to join the company in the work of the tent of meeting,
Ezra 3:8
In the second year after they had come to the temple of God in Jerusalem, in the second month, Zerubbabel the son of Shealtiel and Jeshua the son of Jozadak initiated the work, along with the rest of their associates, the priests and the Levites, and all those who were coming to Jerusalem from the exile. They appointed the Levites who were at least twenty years old to take charge of the work on the Lord's temple.
Numbers 1:2-4
"Take a census of the entire Israelite community by their clans and families, counting the name of every individual male.
Numbers 1:18
and they assembled the entire community together on the first day of the second month. Then the people recorded their ancestry by their clans and families, and the men who were twenty years old or older were listed by name individually,
Numbers 1:22
From the descendants of Simeon: According to the records of their clans and families, all the males numbered of them twenty years old or older who could serve in the army were listed by name individually.
Numbers 2:32
These are the Israelites, numbered according to their families. All those numbered in the camps, by their divisions, are 603,550.
Numbers 3:15
"Number the Levites by their clans and their families; every male from a month old and upward you are to number."
Numbers 3:20
The sons of Merari by their families were Mahli and Mushi. These are the families of the Levites by their clans.
Numbers 3:47
collect five shekels for each one individually; you are to collect this amount in the currency of the sanctuary shekel (this shekel is twenty gerahs).
Numbers 4:34-49
So Moses and Aaron and the leaders of the community numbered the Kohathites by their families and by clans,
1 Chronicles 23:27
According to David's final instructions, the Levites twenty years old and up were counted.