Doctrinal integrity is something that makes one invincible. A man or a woman armed with the unquestionable authority of the Bible is not someone to joke with. An armament of sound doctrine makes one preach with power, and silence every erroneous teaching and opinion. Doctrinal soundness is the spinal cord of every religious practice and worship. The distinction between true and pure religion is based on what is taught by either. In spiritual arguments and apologetic discourses, everyone who argues outside the doctrinal framework stultifies themselves before every thinking man. Anyone who brings their opinions in stipulated discourses plays on unsafe ground, and will sooner or later be dumbfounded and be sent out of the arena.