Hi Brianne! Good question: this was not just used by Elizabeth I actually but is a larger justification we see in rulers going back in different forms well into antiquity. The 'divine' in divine right comes from the Latin divinus meaning 'of a god' or 'of godly origin'. The idea behind the divine right was that rulers claimed to be directly appointed by god and that because of this godly support they and their authority could not be questioned.