Prophets help us name our idols, precisely. They know the right questions. They have a 'feel' for the seductiveness of power, privilege, wealth, law, order and control. They understand the dangers in creating a professional religious class of 'separated ones' or clergy. So St. Francis, for example, refuses priestly 'ordination'.
Prophets intuitively side with the powerless, the deprived, the marginalized, the oppressed.
So prophets are big on justice. The prophets are big on community. Prophets are big on social responsibility. Prophets like Jesus major on love - love for God and others, even enemies.