Allah is the Sovereign in the Universe. Whoever ascribes partners to Allah, or divinity to any of His creation, has indeed invented a tremendous sin. Allah will forgive any transgression but SHIRK. Included in this category are those who worship their own desire (45:23), those who indulge in human worship and in sectarianism (30:31), (42:21), and those who follow man-made books in lieu of the Book of Allah (6:122), (6:137), and those who claim or believe in Revelation after the Qur'an, in any form, including claims of attaining Divine knowledge through mystical experience (6:62), (7:173), (7:191). And those who uphold Trinity (4:171), (5:72-73.) And those who claim that God has a son, and those who follow their religious leaders (9:31) Such people fall from the high station of humanity. Worshiping any entity other than Allah, sinks the human "Self" down to subhuman levels (22:31). But most of those who claim belief (and call themselves Muslims), indulge in SHIRK (12:106).