@alex717,
Not to take away from the (what we understand to be) unique message of Jesus, a part of which was making religion a person's existential way of life as apposed to social and public performance of rites, but the NT was not written in a vacuum. Obviously, for example, the influences of the Jewish OT and its monotheistic conception of God was important, as was (especially in the case of St. Paul) the general influence of Hellenistic thinking that had spread throughout the Levantine area.
Jesus never having written anything himself, we are tantalizingly left with second hand accounts of his life and teaching, and must search the fragments in an attempt to understand either. As we know much less than supposed about the meaning of many of the words found in the ancient texts, and are also dependent upon translations which are tainted by dogmatic traditions, the process of understanding it seems very challenging.