One Class Church

We instinctively contrast the ministry with the laity, the priesthood with the people, the professional with the amateur. But the New Testament church knew nothing of this. This is perfectly astounding when you recall that every society in the world, including Israel, had had its specialized holy seasons, holy places, and holy people. In Christianity, all three were abolished. The keeping of holy days was a matter of indifference to the early Christians. They had no holy buildings, but met in private houses--the incarnation of God had made the secular sacred. As for holy people, why, all believers were called to be that holy people, that universal priesthood envisioned long ago in the Old Testament but never hitherto realized. The mediation of Jesus has abolished the need for an intermediary caste of priests: all can have access to God in virtue of the sacrifice of Christ; all have the priestly responsibility of interceding for man to God; all have the prophetic task of speaking God's message to men. There is no priestly body within Christianity. It is a one-class society, though you would never guess as much, so grossly has conformity to pagan and Old-Testament models distorted this unique facet of Christ's community.
  
... Michael Green (b. 1930), "Mission and Ministry"