Yesterday I was talking to a classmate about the issues involved with comparison between Christianity and Islam. Now my knowledge of Christianity is somewhat limited because I don't take any particular interest in it; but I'd like to think I've seen enough of it in my life to be able to discuss it. Essentially though, belief in Jesus (as the son of God, as opposed to a prophet) is paramount.
The issue now with comparing it to Islam is that this is, for all intents and purposes, shirk as you are worshipping something that is not God. Shirk is the only unforgivable sin and exists due to the age of Jahilliyah in pre-Islamic Arabia. People worshipped idols, which filled the ka'ba; now the centre of Hajj (one of the five pillars). This, against the belief in God of monotheism, is wrong in the eyes of any Muslim. It is fortunate for Christians if Islam is the true religion as they see Muslims see Christians as 'People of the Book;' and thus can achieve the same paradise.
But naturally if you are, as a religious believer, breaking another religious believers' only unforgivable sin it would certainly be wrong of you to assume that you could compare the two.
