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:
Christian denomination
Christianity has not been a monolithic faith since the first century or Apostolic Age, if ever, and today there exist a large variety of groups that share a common history and tradition within and without mainstream Christianity. Christianity is the largest religion in the world (making up approximately one-third of the population) and the various divisions have commonalities and differences in tradition, theology, church government, doctrine, and language.