Thomas also wrote for and was editor of the "Apostolic Advocate" which first appeared in May 1834. His studies during this period of his life generated the foundation for many of the beliefs he came to espouse as a Christadelphian and he began to believe that the basis of knowledge before baptism was greater than the Restoration Movement believed and also that widely held orthodox Christian beliefs were blatantly wrong. Whilst his freedom to believe his unique beliefs was accepted, many objected to the preaching of these beliefs as necessary for salvation. This difference led to a series of debates particularly between Thomas and Alexander Campbell. Because Thomas eventually rebaptised himself and rejected his former beliefs and associations, he was formally disfellowshipped in 1837. Some people, nonetheless, associated with him and accepted his views.