rights of citizens in the face of an unjust ruler. Do they have the right to overthrow that ruler? Knox said yes, and he based his argument on Scripture. He said that when a ruler does not support the true Church, as he felt Queen Mary was not, his or her throne is in jeopardy. With Scotland on the verge of civil war, Knox returned there in May 1559 to lead the Protestant cause. He served as chaplain of the Protestant armies, as an enlistment officer and even as a spy for the English behind French lines. He became the heart and soul