"We are Christians who have found an approach to God through the life and teachings of Jesus."

I've been reading a number of books, including the gospels, on the life and teachings of Jesus lately. Being fairly new to progressive Christianity (but very thankful to find this flavor of the faith), do you think that the life and teachings of Jesus refer to:

1. Those of the historical Jesus (as mainly found in the gospels)?
2. Those of the resurrected Jesus (as mainly found in Paul's epistles)?

Do you think there is a difference between Jesus' earthly teachings and the teachings of Christ that the apostle Paul claimed to have received by revelation?

If you do see a dichotomy there, which teachings seem to help you most in your approach to God?

(Please feel free to move this post, moderators, if it is not appropriate here.)