John Wesley discusses the distinction between the ministerial offices of preaching and priesthood, emphasizing that while all are called to preach the gospel, not all are called to administer sacraments. He argues that the roles of prophets and priests in the Old Testament differ from those in the New Testament, and that the early Methodists were called to provoke the established church rather than separate from it. Wesley stresses the importance of remaining within the Church of England while fulfilling their mission to spread the gospel, and he encourages preachers to focus on their calling without overstepping into priestly duties.