Hesabu 8 : 24 Numbers chapter 8 verse 24

Mambo yawapasayo hao Walawi ni haya; tangu waliopata umri wa miaka ishirini na mitano na zaidi wataingia ndani ili watumike utumishi katika kazi ya hema ya kukutania;
soma Mlango wa 8

"This is that which belongs to the Levites: from twenty-five years old and upward they shall go in to wait on the service in the work of the Tent of Meeting;