Some denominations today claim themselves to be the only true Christian church to be saved at the end of time. Another ridiculous bit of nonsense made up by the very denominations/churches that have an abundance of other false teachings that go right along with this one.
Some of these groups/cults even claim that their church is the “144,000” chosen Jews mentioned in Revelation (i.e. that they are indeed the “lost tribe”) – more ridiculous nonsense.
All true followers of Christ are part of the worldwide Church of Christ, regardless of where they are. Be not deceived.