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:
Catholic theology
Sinning according to the Greek word in scripture, "amartia", "falling short of the mark", succumbing to our imperfection: we always remain on the road to perfection.in this life. People can sin by failing to obey the Ten Commandments, failing to love God, and failing to love other people. Some sins are more serious than others, ranging from lesser, venial sins, to grave, mortal sins that sever a person's relationship with God.