Read Numbers 17:6 Using Other Translations
And Moses spake unto the children of Israel, and every one of their princes gave him a rod apiece, for each prince one, according to their fathers' houses, even twelve rods: and the rod of Aaron was among their rods.
Moses spoke to the people of Israel. And all their chiefs gave him staffs, one for each chief, according to their fathers' houses, twelve staffs. And the staff of Aaron was among their staffs.
So Moses gave the instructions to the people of Israel, and each of the twelve tribal leaders, including Aaron, brought Moses a staff.