Numbers 4:42-45

42Those numbered from the families of the Merarites, by their families, by their clans,

43from thirty years old and upward to fifty years old, everyone who entered the company for the work in the tent of meeting –

44those of them numbered by their families were 3,200.

45These are those numbered from the families of the Merarites, whom Moses and Aaron numbered according to the word of the Lord by the authority of Moses.