Taking a census of the people leads to a unified consensus.
In the wilderness, Moses counts the people. The Levites replace the firstborn in Temple service. The firstborn have to redeem themselves. The three branches of the Levite family conveyed the Tabernacle through the desert. Each of the three Levite families had their specific tasks. The twelve tribes camped and traveled in formation, a grid with four to a side ordered around the Sanctuary in the center. Each of the tribes also had a chief, and heralded a flag bearing their tribal colors and crest.