"Down Satan"

This story features Gregorius, a middle-aged man who has concluded that God has abandoned him. To bring the All Mighty back into his world, the man decides to build a new Hell on earth. As his new Satanic Cathedral brings followers by the truckload, he keeps waiting for God to intervene and save him. Instead, he is captured by authorities after countless people died in the torture chambers contained within the Cathedral. Does Gregorius go insane or does Satan take charge or does God truly abandoned him?