Reason number five we are sure it is God’s will for all to be healed is because of the origin of sickness. Romans 5:11-12 tells us. He said, “…but we also joy in God through our Lord Jesus Christ, by whom we have now received the atonement, wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned.”