Probably was a really top bloke who lived 2000 years ago. On the level, talked sense, encouraged everyone just to get along with each other.
Murdered by the authorities who saw him as a threat.
Now worshipped as the son of God.
Closest modern day comparisons would be John Lennon or Martin Luther King (both also murdered).
The closest we'll ever come to understanding God.
His most important ideal was compassion. This stems rom empathy. Being able to put oneself in others' shoes. And not judging unfairly, in order that we are not judged by the same method. Whether you're atheist or agnostic, these are principles that are acceptable. He has a lot of other principles that you would agree with. Like the importance of not being hypocritical, and the need to focus on being spiritual more than a dogmatic following of the rules. The more you read, the more you understand.
Pharisee: who is he to claim that he can forgive sins. blasphemy Jesus: What is easier to say, your sins are forgiven or take your mat rise up and go home.
And the man did just so.