Beyond this view however, Christian theology is a vast, varied, differentiated, and mythical landscape. Many concepts with "Christianity" appear to contradict one another, or else they appear to be incompatible with other "Christian" views. And the concept that "belief in Jesus" can be discussed separately from "Christianity," raises some profound questions:
Is it possible to "believe in Jesus" without subscribing to particular theological doctrines described in various Christian doctrines?
Which particular set of beliefs qualifes one as a "Christian"
If one "Christian" believes in a very different concept of God, Jesus, the Trinity, etc. from another "Christian," what are the real common beliefs that all "Christians" share?
Does not believing in a particular doctrine about Jesus constitute a sin, or even a mortal sin?
In general, most "Christians" (~90%) are associated with a religious institution (a "Church," or denomination) that adheres to the concepts outlined in Nicene Christianity, which affirms the general belief that Jesus was the Messiah on Earth. Within this creed are several other doctrines: