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:
David Flusser
Flusser pursued his research at a time when many Jews blamed Christianity for Nazism. During his trial in Israel, the Gestapo officer Adolf Eichmann refused to take an oath on the New Testament, insisting he would swear only "in the name of God." Flusser commented in an editorial in the "Jerusalem Post": "I do not know who is the God in whose name Eichmann swore, but I am certain that it is neither the God of Israel nor the God of the Christian church. It should now become clear to the strongest Jewish opponents of Christianity that Christianity "per se" imposes limitations, and that the greatest crime against our people was not committed in the name of the Christian faith".