Jesus asked his followers to have commitment to what he preached not to what he was. So what are Christians supposed to believe and why?

What does ’the Son of God’ mean? How can ANYONE understand the Trinity? How CAN you have a personal relationship with God? These ideas started as models to explain the inexplicable but became shibboleths as the church became mainstream. They limit us though as we talk to people of other faiths and to ordinary people who think the ideas are cartoonlike. So let us start thinking again.