Its heads give judgment for a bribe;/Micah address the 3 ministries of kingship, priesthood, and prophet. Kings administer justice, priests represent people to God, and prophets represent God to people. Heads are leaders, kings and apostles are in similar positions. All 3 are rebuked for offering their services for money.
its priests teach for a price;/
its prophets practice divination for money; (Micah 3:11)
I have previously written about the role of fathers as priests. What I found interesting in this passage was the connection between teaching and priesthood. Part of our role as priests—the ministry of representing people to God—is to teach these people about God. While a prophet may bring a special message to a person or a people from God, it is the priestly role which is to be a teacher. So priest does not merely intercede for people before God, but teaches the same people what God requires of them. This differs from the prophet who brings specific demands to a person or people, often in connection with judgment. The priest teaches the general expectations God has for his followers.
Israel were to have been obedient to God thus set apart from the other nations: a kingdom of priests and a holy nation; teaching them the ways of God. This is a role that we have as the people of God.
But you are a chosen race, a royal priesthood, a holy nation, a people for his own possession, that you may proclaim the excellencies of him who called you out of darkness into his marvelous light. (1 Peter 2:9 ESV)As a father it is in our role as priests that we teach to our children. As such it is not optional but a necessity. There may also be a connection between the position of elder and priestly duties given the focus on teaching ability as a qualification for eldership (1Ti 3:2; Tit 1:9), although eldership is also a leadership role.