1 Chronicles 23:24
These [were] the sons of Levi according to the house of their fathers, the heads of the {families}, according to their enrollment, by the number of the names, according to their head count, [who were to] do the work of the service of the house of Yahweh, from twenty years old and above.
Numbers 10:17
The tabernacle was taken down, and the sons of Gershon and the sons of Merari, the bearers of the tabernacle, set out.
Numbers 10:21
The Kohathites, the bearers of the sanctuary, set out, and they set up the tabernacle before they arrived.
1 Chronicles 23:3
And the Levites thirty years old and above were counted, and their number according to their head count for the men [was] thirty-eight thousand.
Numbers 4:3
from {thirty years old} and above, up to {fifty years old}, everyone who comes to the service to do the work in the tent of assembly.
Numbers 8:24
"This [is] what is for the Levites: {those twenty-five years old} and above will come to help [with the] service in the work of the tent of assembly;
Ezra 3:8
In the second year after their coming to the house of God at Jerusalem, in the second month, Zerubbabel son of Shealtiel and Jeshua son of Jehozadak began [their work], and the remainder of their brothers the priests and the Levites and all who came from the captivity to Jerusalem. They appointed the Levites {from twenty years and older} to direct the work of the house of Yahweh.
Numbers 1:2-4
"{Take a census of} the entire community of the {Israelites} according to their clans and {their families}, according to [the] number of names, every male individually
Numbers 1:18
and they summoned the entire community on [the] first day of the second month. And they registered themselves among their clans according to {their families}, according to [the] number of names from {those twenty years old} and above individually,
Numbers 1:22
From the descendants of Simeon, their genealogies according to their clans, according to {their families}, those who were counted according to [the] number of their names, every individual male from {twenty years old} and above, everyone who [is able] to go to war:
Numbers 2:32
These [were] the ones counted of the {Israelites} according to {their families}; all those counted from the camps according to their divisions [were] six hundred and three thousand five hundred.
Numbers 3:15
"Muster the descendants of Levi according to {their families}, according to their clans. You will count every male from {one month} and above."
Numbers 3:20
The sons of Merari according to their tribes: Mahli and Mushi. These [are] the clans of the Levites according to {their families}.
Numbers 3:47
you will receive five shekels a person, in the sanctuary shekel; you will collect twenty gerahs [per] shekel.
Numbers 4:34-49
And Moses and Aaron mustered the leaders of the community according to the house of {their families},
1 Chronicles 23:27
For by the last words of David, they [are] the number of the sons of Levi, from twenty years old and above.