Over the next five years, he developed the principles of his mature theology – most notably his conviction that the very notion of a clergyman was a sin against the Holy Spirit, because it limited the recognition that the Holy Spirit could speak through any member of the Church. During this time (1827–28) he joined an interdenominational meeting of believers (including Anthony Norris Groves, Edward Cronin, J. G. Bellett, and Francis Hutchinson) who met to "break bread" together in Dublin as a symbol of their unity in Christ. By 1832, this group had grown and began to identify themselves as a distinct Christian assembly. As they travelled and began new assemblies in Ireland and England, they formed the movement now known as the Plymouth Brethren.
Over the next five years he developed the principles of his mature theology – most notably his conviction that the very notion of a clergyman was a sin against the Holy Spirit because it limited the recognition that the Holy Spirit could speak through any member of the Church During this time (1827–28) he joined an interdenominational meeting of believers (including Anthony Norris Groves Edward Cronin J G Bellett and Francis Hutchinson) who met to "break bread" together in Dublin as a symbol of their unity in Christ By 1832 this group had grown and began to identify themselves as a distinct Christian assembly As they travelled and began new assemblies in Ireland and England they formed the movement now known as the Plymouth Brethren