Eternal sin
In Catholic teaching there are six sins that blaspheme against the Holy Spirit. They are: Several passages in the Bible are frequently interpreted as referring to the unforgivable sin:
Islamic views on sin
This Quranic verse indicates that "khati’ah" is considered an "ithm", a grave sin. In fact, the word "khati’ah" is associated with some of the most heinous religious sins in the Quran. In one Quranic verse this word is used to describe the sin of slaying one's own children for fear of poverty. (Quran 17:33/31). Scholars believe that "dhanb" or "ithm" could be used in place of "khati’ah" in this instance; however, the word choice indicates that "khati’ah" is more than just a moral lapse or mistake and is punishable.