A system of government or a State governed by a sacerdotal order, claiming a divine commission.

Theocrat: A person who rules in a theocracy as the representative of God or a god; a divine or deified ruler.

"The Ayatollah gathered at his bedside..the 15 most powerful theocrats within the regime." Observer.

Interview with Jimmy Carter - Stanford Medicine Magazine, Summer 2006 America veering toward theocracy. You have said that America is moving toward theocracy. Carter: Yes,  I don’t think there is any doubt about it.

A “theocracy,” as its name suggests, has to do with the rule of God over a people. But there is more to a theocracy than the bare fact that God is exercising control over his children. 

A true theocracy exists when God’s dominion is coupled with a domain, when his rule is connected to a realm, an actual piece of real estate within the borders of which God rules his people in a special and unique way. Israel’s situation in the Promised Land is perhaps the most obvious example of a theocracy in the Bible.