There is no one who believes something that he will not die for. Because knowledge cannot be pragmatic. Although there are pragmatic ideas in the world, it only exist because there remains ignorance due to the human inability to know all things. But this mixture of knowledge and mystery in ones view is predetermined by God. We can only escape what is harmful to us through revelation or illumination. So the defense of truth is more than just based upon our confidence that we know the truth. Whatever knowledge we have always rises up to the level of life and death. The bible is all that we need to live a life of Godliness. This means that the revealed knowledge is a shorten version of all the knowledge of God. In other words both the shortened version and the exhaustive version are going in the same direction. There is no such thing as two equal lines of truth. We have enough revealed knowledge to escape death and embrace life. But what we believe is always under the obligation of our survival in this world. We receive life or death by our doctrinal description. This is what the bible means when it makes a distinction between the righteous curse and the wicked curse. The bible teaches that if we belong to Christ we receive every pure description or doctrine as if it is defining the kingdom that we belong to. Even tho we are ignorant at some point yet the principle of Gods kingdom is that if we understand the smallest truth we understand the whole truth. Because the Spirit of one word contains all Gods ideas. We are able to be ignorant but fully able to express Gods curse to its fullest. And we are able to receive Gods absolute blessing. We must understand that a person believes truth about themselves in which the blindness that their ignorance represents is the inability for them to embrace life. And for us the ignorance represent our inability to embrace the curse.