Tripartite Government in Torah

Tripartite government is a consistent pattern in Torah.

• Familial blessings are divided into priest, king, and land. Under normal circumstances, all 3 would be inherited by the firstborn son, but it wasn't unheard of to split them up. For example, Levi received the priestly blessing, Judah the kingly, and Joseph the double-portion.
• Authority in the wilderness was divided between Moses, Aaron, and the Elders. The lines of responsibility were blurred since all 3 had both legislative and judicial powers, but the executive power was almost exclusively held by Moses.
• In the construction of the Mishkan (tabernacle), responsibility was divided between the sons of Aaron (of Levi, the priest's tribe), Bezalel (of Judah, the king's tribe), and Oholiab (of Dan, whose name means "judge").