Seems to be somewhere along the path of time there has been a sudden conclusion or assumption that Christianity should be defined by the paths of the followers and not by the philosophy of the actual scripture. Why can such a thing NOT be done? A. Christians are NOT perfect by their own philosophy (for ALL have sinned) B. Christians are born hypocrites, by their own philosophy, because they are imperfect they to will NEVER be able to perform all the actions and criteria for a "perfect" life. Before I go any farther, I believe that I must clear up the notion of what I believe God is, according to the scriptures that Christianity (the faith that I claim to hold) accepts as true. To do so, I believe that I must first talk about the issue of inspiration of Scripture. Many people hold the idea that the scriptures and the inspired Word of God. Being that there is no way to prove or disprove this, as there is no way to prove or disprove the idea of God, I choose to hold the belief that the scriptures are NOT inspired. This does NOT though, change the validity of them as a source for the Christian faith. It is still the "Holy Book" whether of not such inspiration occurred because of the fact that people follow it (I could take another post describing my beliefs on inspiration, but I'll hold out on this time).
Thus, from how Christianity is presented through the Bible, what I see as "God" (and mind you, this apparently is solely my own personal belief) is that God is an ideal. God is the personification of the ideal of all that is right, just as the devil is the ideal of all that is evil. What is right? According to the Christian faith, what is right is what benefits the over-all balance of good in the universe. Thus the popularization of the phrase "What Would Jesus Do?" asking in effect "What Would Cause the Greater Good?" (if in fact the idea of God is that God is all that is good).
Now, whether there is an actual ENTITY that is "God" is extremely questionable, and logically no. The fact remains though that there are things that are inherently good and inherently bad. What God is the personification of that which is Good, and the worship therein of the Ultimate Goodness.
As for Jesus Christ, as a person, I believe he can be referred to, without any hesitation as the "Son of God." Even to someone who disbelieves in the common of definition of God the Entity. Why? Because if you hold that God is the idea of all that is good, a human who can teach such things (i.e. how to live "good") can be in effect the son of the good ideal. In fact, NEVER in the scriptures does Christ refer to himself as the "Son of God." His common title in referring to himself is the "Son of Man," which, biologically, everyone is. What Jesus preaches though is a way of goodness. He teaches love, he teaches peace, he teaches justice. He tells people to "spread the good news." What is this "good news"? Simply put: How to live a good life.