Chapter 6 turns to the internal ordering of the community through purity discourse concerning sin. It discusses the regulation of sin inside the borders of the pure community, focusing on the eucharist and on the conceptualization of repentance and penance as purification. Though in the first two centuries the eucharist had already become the sacred ritual representing the community, and was therefore guarded by purity restrictions, there was as yet no ritual system through which sinners could purify themselves and thus approach the eucharist. Some texts, such as the Didache, describe the eucharist as a sacrifice and the communal cohesion it requires as a pure state.
Capacity of entanglement in random pure state