church. During this period, in December 1560, Knox's wife, Margery, died, leaving Knox to care for their two sons, aged three and a half and two years old. John Calvin, who had lost his own wife in 1549, wrote a letter of condolence. Parliament reconvened on 15 January 1561 to consider the Book of Discipline. The Kirk was to be run on democratic lines. Each congregation was free to choose or reject its own pastor, but once he was chosen he could not be fired. Each parish was to be self-supporting, as far as possible. The bishops were replaced by ten to twelve "superintendents". The plan included a system of national education based on universality as a fundamental principle. Certain areas of law were placed under ecclesiastical authority. The Parliament did not approve the plan, however, mainly for reasons of finance. The Kirk was to be financed out of the patrimony of the Roman Catholic Church in Scotland. Much of this was now in the hands of the nobles, who were reluctant to give up their possessions. A final decision on the plan was delayed because of the impending return of Mary, Queen of Scots. Knox and Queen Mary, 1561–1564 On 19 August 1561, cannons were fired in Leith to announce Queen Mary's arrival in Scotland. When she attended Mass being celebrated in the royal chapel at Holyrood Palace five days later, this prompted a protest in which one of her servants was jostled. The next day she issued a proclamation that there would be no alteration in the current state of religion and that her servants should not be molested or troubled. Many nobles accepted this, but not Knox. The following Sunday, he protested from the pulpit of St Giles'. As a result, just two weeks after her return, Mary summoned Knox. She accused him of inciting a rebellion against her mother and of writing a book against her own authority. Knox answered that as long as her subjects found her rule convenient, he was willing to accept her governance, noting that Paul the Apostle had been willing to live under Nero's rule. Mary noted, however, that he had written against the principle of female rule itself. He responded that she should not be troubled by what had never harmed her. When Mary asked him whether subjects had a right to resist their ruler, he replied that if monarchs