An exercitation concerning usurped powers: wherein the difference betwixt civill authority and usurpation is stated. That the obedience due to lawfull magistrates, is not owing, or payable, to usurped powers, is maintained. The obligation of oaths, and other sanctions to the former, notwithstanding the antipolitie of the latter is asserted. And the arguments urged on the contrary part in divers late printed discourses are answered. Being modestly, and inoffensively managed: by one studious of truth and peace both in Church and state.