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.