In 4:48 we learn that shirk is unforgiveable if unrepented for: My question is very simple. What really is shirk and which type of shirk  is unforgiveable (major) shirk? The polytheists believed in One True Creator of the universe, and yet they were still somehow committing shirk: Elsewhere, other practices have been categorised as shirk: Even worshipping the name “Allah” rather than the meaning is considered shirk based on a lecture I listened to. All of the follo