Eternal sin
In Christian hamartiology, eternal sins, unforgivable sins, or unpardonable sins are sins which will not be forgiven by God. One eternal or unforgivable sin (blasphemy against the Holy Spirit) is specified in several passages of the Synoptic Gospels, including , , and .
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.