Each volume of the series "Voices from Prison Walls" gives a glimpse of the spiritual trek of the gang members, murderers, drug addicts, and violent men who respond to the light of the Gospel inside a prison. In each volume ( and now Prison Chaplain Cawman describes springs of joy as inmates turn from the awful bondage of the Adversary of their souls to the freedom that only Christ can give. Dealing with difficulties from a terrible pandemic, bureaucrats, confrontational inmates persuaded by other doctrines and pagan religions, he lifts up soul after soul, each one a trophy of God's grace and the cleansing power of the Holy Spirit. He also shares happy events from his personal life, such as the long-awaited "treasure" with which God has blessed him, a trip to walk in the footsteps of Jesus in the Holy Land, and the testimony of how his missionary daughter was called to serve in foreign fields.