George Hakewil's pamphlet takes the form of a letter addressed to His Majesty, responding directly to Dr. Carier's treatise and letter. Hakewill recounts Carier's own account of his conversion to what he calls the 'Catholike' faith and then proceeds to challenge the political and religious assumptions underlying Carier's position. He examines the means of Carier's conversion, criticises Carier's appeal to reconciliation with the Roman Church, and sets out a series of political considerations regarding the authority of monarchs, the role of religion in the state, and the dangers of aligning civil loyalty with Rome. Hakewill argues that the religion of England cannot be judged a mere change or reform of the Catholic Church, but rather a distinct and consistent tradition, and he refutes Carier's claim that the Church of Rome offers the true and unchanging religion. The work exposes what Hakewil perceives as the political policies embedded in Carier's religious arguments and emphasises the need for obedience to the established religion of England and the monarchy.