Numbers 4:33

וְזֹאת מִשְׁמֶרֶת מַשָּׂאָם לְכָל־עֲבֹדָתָם בְּאֹהֶל מוֹעֵד קַרְשֵׁי הַמִּשְׁכָּן וּבְרִיחָיו וְעַמּוּדָיו וַאֲדָנָֽיו

And this is the charge of their burden, according to all their service in the tent of meeting: the boards of the tabernacle, and the bars thereof, and the pillars thereof, and the sockets thereof;

וְעַמּוּדֵי הֶחָצֵר סָבִיב וְאַדְנֵיהֶם וִֽיתֵדֹתָם וּמֵיתְרֵיהֶם לְכָל־כְּלֵיהֶם וּלְכֹל עֲבֹדָתָם וּבְשֵׁמֹת תִּפְקְדוּ אֶת־כְּלֵי מִשְׁמֶרֶת מַשָּׂאָֽם

and the pillars of the court round about, and their sockets, and their pins, and their cords, even all their appurtenance, and all that pertaineth to their service; and by name ye shall appoint the instruments of the charge of their burden.

וַיִּפְקֹד מֹשֶׁה וְאַהֲרֹן וּנְשִׂיאֵי הָעֵדָה אֶת־בְּנֵי הַקְּהָתִי לְמִשְׁפְּחֹתָם וּלְבֵית אֲבֹתָֽם

And Moses and Aaron and the princes of the congregation numbered the sons of the Kohathites by their families, and by their fathers’houses,

מִבֶּן שְׁלֹשִׁים שָׁנָה וָמַעְלָה וְעַד בֶּן־חֲמִשִּׁים שָׁנָה כָּל־הַבָּא לַצָּבָא לַעֲבֹדָה בְּאֹהֶל מוֹעֵֽד

from thirty years old and upward even unto fifty years old, every one that entered upon the service, for service in the tent of meeting.