Do We Really Only Die Once?

"Just as people are destined to die once, and after that to face judgement..." (NIV)

The teaching of dying only once, is mentioned only once in the NT.

The following NT verses support the idea of reincarnation.  If the people in those days did not believe in reincarnation, then why would they have asked or mentioned these things?

John 1:19-21, 24:
The Jewish leaders sent priests and Levites to ask John the Baptist if he was Elijah or the prophet (ie. Moses).
The Pharisees asked John why does he baptize, if he is not the Messiah, Elijah, nor the prophet (Moses).

Matthew 17:12:
Jesus says that Elijah has already come and they didn't recognize him.
(But then, in verse 13, the disciples understood him to mean Elijah WAS John the Baptist.  Here we seem to have a conflict with the verses in John, where John says he is not Elijah)

Mark 8:27-28:
Jesus asks his disciples who people say he is.  They answer that some say he's Elijah, some say the prophet (Moses), some say John the Baptist.

Mark 6:14-15:
People were telling Herod that Jesus was John the Baptist raised from the dead, and others said he was Elijah, or one of the prophets from long ago.

There are several other NT verses that mention the same topics; many more supporting the idea of reincarnation versus the teaching of only dying once (only 1 verse in the entire NT!).

Might Christians then consider, after all the evidence above, that MAYBE there is such a reality as reincarnation, and that the verse in Hebrews is misunderstood?

I certainly love entertaining the thought because I see a much more loving God, Who gives people more chances than just one to correct themselves and the wrong they have done in life; it's not just, "believe in Jesus, or you're going to hell", but if a person doesn't follow a spiritual journey in one lifetime, they get another chance.

(By the way, Christianity is the only religion in the entire world that doesn't support the thought of reincarnation.  Possibly the "Founding Fathers" of Christianity-the Catholics, may have had a certain agenda in this "only dying once" teaching?  Something to consider.)