him, and he had to struggle against Anglicans who opposed the Methodists and the "doctrine of the New Birth". Whitefield wrote of his opponents, "I am fully convinced there is a fundamental difference between us and them. They believe only an outward Christ, we further believe that He must be inwardly formed in our hearts also." In February 1739, parish priests in Bath and Bristol refused to allow Whitefield to preach in their churches on the grounds that he was a religious enthusiast. In response, he began open-air field preaching in the mining community of Kingswood, near Bristol. Open-air preaching was common in Wales, Scotland and Northern Ireland, but it was unheard of in England. Further, Whitefield violated protocol by preaching in another priest's parish without permission. Within a week, he was preaching to crowds of 10,000. By March, Whitefield had moved on to preach elsewhere. By May, he was preaching to London crowds of 50,000. He left his followers in Bristol in the care of John Wesley. Whitefield's notoriety was increased through the use of newspaper advertisements to promote his revivals. Wesley was at first uneasy about preaching outdoors, as it was contrary to his high-church sense of decency. Eventually, however, Wesley changed his mind, claiming that "all the world [is] my parish". On April 2, 1739, Wesley first preached to about 3,000 people near Bristol. From then on he continued to preach wherever he could gather an assembly, taking the opportunity to recruit followers to the movement. Faced with growing evangelistic and pastoral responsibilities, Wesley and Whitefield appointed lay preachers and leaders. Methodist preachers focused particularly on evangelising people who had been "neglected" by the established Church of England. Wesley and his assistant preachers organised the new converts into Methodist societies. These societies were divided into groups called classes—intimate meetings where individuals were encouraged to confess their sins to one another and to build each other up. They also took part in love feasts which allowed for the sharing of testimony, a key feature of early Methodism. Growth in numbers and increasing hostility impressed upon the revival converts a deep sense of their corporate identity. Three teachings that Methodists saw as the foundation of Christian faith were: People are all, by nature, "dead in sin". They are "justified by faith alone" Faith produces inward and outward holiness. The evangelicals responded vigorously to opposition—both literary criticism and even mob