Ch 4 brought into focus great power - great grace- in Ch 5 it's great fear. --Understandably so- where there is purity, there is power. God was establishing the-foundation of the church, - the apostles bearing witness to the resurrection of J.C. w-great-power. But when impurity sought to permeate, God immediately - definitively dealt w-it-- there was no ambiguity, no uncertainty about the message. We might say that God was--deadly serious- about establishing the church on a pure foundation...