Christadelphians are nontrinitarians who believe that the Son did not exist before the Incarnation, therefore not being eternal, and therefore being unable to be both God and a man. They also believe that the Holy Spirit is not a 'person,' but was removed from earth after the last apostle died. Many Christians consider them a cult, heretical, and have no right to use the title Christian. However, there are some who consider them to be Christians, on the basis that they believe in salvation only through the Lord Jesus, though who exactly this Jesus actually is can be up for debate.