Haven't you heard? The trinity is a mystery but God is God and Christ is God and the Holy Spirit is God and yet there are not three Gods but only one God. When Jesus was baptized God spoke out of the clouds, the holy spirit God was a dove and the man God was Jesus.
So this God became a man, then sacrificed himself to himself so he could forgive us humans of something that some man did thousands of years before we were born. All we have to do is believe that crap and we will have everlasting life somewhere(new earth or maybe new heaven) but if we don't we will be tormented with fire forever by this loving God. It's all so simple.
Ken P.