divine right

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The doctrine that monarchs derive their right to rule directly from God and are accountable only to God.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Christianity, political science, philosophy The Christian doctrine that monarchs have a God-given right to rule, that they are answerable only to God, and that rebellion is sinful.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the doctrine that kings derive their right to rule directly from God and are not accountable to their subjects; rebellion is the worst of political crimes