original_query: What is the purpose of "shouting" in Christian prayer meetings or worship services?
query: What is the purpose of "shouting", or the ring shout, in Christian prayer meetings or worship services?
answer: The ring shout, a ritual involving circular movement, shuffling, clapping, and singing or praying, was an ecstatic religious practice within Christian prayer meetings, evolving from African traditions.  It served a spiritual purpose, expressing worship and transcendence.