Lots of times Christadelphians are called a cult group, but they are a religious group where no specific human being is venerated and no human beings worshipped like in other religious Christian groups which are not called cults, like the Catholic Church where people pray to 'saints' and worship in front of statues.
Narrations and stories about men, women and peoples are delivered to mankind to bring a message of love and hope and we can see that by the centuries that passed, not much is changed to the words of those written documents or books and copied by many scribes who were serious about bringing over the right words. As the system announced in the Scriptures rests exclusively on the ground of being from Divine revelation, one might suppose that the deists and sceptics together with their coadjutors the rationalists, in thus rejecting the absolute foundation of Scripture revelation, need not give themselves any further trouble of "criticizing them." The credibility of the declarations of the prophets, Jesus and his disciples is greatly corroborated and rendered in a high degree probable. It will appear unwarrantable to charge men so far surpassing the best and most learned teachers of their age, with such a degree of enthusiasm or villainy, as must be ascribed to them, if their pretensions to a divine influence were either a delusion or in imposture.