I'm curious, what exactly don't you get? I promise I won't go "Crusader" on you.
By the way, it's "son of God", not "sun of God".
One thing I do not get with Christianity, and one of the reasons I am against it, is that how can a "loving" God be willing to eternally torture a person, a soul, in Hell if they decide not to tow the line and fall in behind Jesus. Any god that uses torture as a means of motivation to worship him is not a "good" or "loving" god. That is just my lil' opinion on the bugger.
The very first human pair sinned, then Jesus cleared this, after that God said humans have now their own fate they can mess up as they wish.
And humans are God's followers (not animals or aliens...but who knows)
Ergo: Anything you dislike in christianity is about the people and not God himself.
But this is true for anything on the material plane.