Adam was also the son of god.. in great respect we all are his children. But when adam and eve ate of the tree, those who don't know the story well think they died.
But reading on, the didn't physically die they spiritually died. The both once had a relationship with god, fully of trust but...
Just like you can have a man and wife have a son. The son grows up in his father presence, resembling his father. They way he talks, the way he acts etc.
This was the same for jesus. He had such a close relationship with god, his father, that he mirrored exactly his father actions - but on...
Does god really exist? I reckon you're asking the wrong people. People all looking for answers themselves.
If he so exists, ask him to present himself to you. If he's all that he says he is, and your not just asking to be cocky or prove yourself to someone, but asking from a genuine...