Working out the Gospel in the First Century

Kevin Parker, in a potent discourse on politics (Facebook account possibly required), wrote this:

The Gospel itself is a part of culture, yet it transcends all human cultures. There is a danger in assuming that our brand of Christianity is the exact and perfectly restored pure 100% Grade A gospel as put forth by the disciples and Church fathers. Face it, folks, those early leaders didn't even agree 100% among themselves, and much of the New Testament witness is a working out of the Gospel amidst various cultural shortcomings and biased perceptions.