10319. The fact that the evils of self-love and love of the world are the cause of that lack of knowledge about things that belong to eternal life is plainly evident from people within the Church. Although they know from revelation about the existence of God, about the existence of heaven and hell, about the existence of eternal life, and about the need to obtain this life through the good of love and faith, they nevertheless sink into a denial of those ideas; both those who are learned and those who are not learned do so. This too shows how much lack of knowledge there would be if no revelation existed.