On 19 August 1561, cannon 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 exceeded their lawful limits, they might be resisted, even by force.