Was the founder of christianity considerd their god?
Technically yes. Christian in its most basic form means, Christ-like. Jesus Christ to christians was God in the flesh on this earth. We believe that Jesus was fully God, and also fully man, he had to be both to be able to be our saviour from our sins. Jesus is considered one part of the trinity that is our God. Whatever Jesus started, his disciples and other believers have continued since his death and resurrection. So, his disciples were a huge part of really getting the Christian church started.
