Bamidbar 1:16-18

Orthodox Jewish Bible

¹⁶ These were the called men of the Edah, nasiim of the tribes of their avot, rashei alfei Yisroel (head-men of the clans of Yisroel).

¹⁷ And Moshe and Aharon took these men which had been designated by their names;

¹⁸ And they assembled kol HaEdah together on the first yom of the second month, and they declared their family after their mishpekhot, by the bais of their avot, according to the number of the shmot, from twenty years old and upward, one by one.