Numbers 2:2, 34

“The sons of Israel shall camp, each by his own standard, with the banners of their fathers’ households; they shall camp around the Tent of Meeting (tabernacle), but at a distance.

Thus the Israelites did [as ordered]; according to everything the LORD had commanded Moses, so they camped by their standards, and so they moved out, everyone with his family (clan), according to his fathers’ household.