Yes, and because Christians were told to stop believing in Reincarnation or be put to death, a large knowledge gap now exists within modern Eschatology. Who knows if that gap can ever be bridged?...does that mean reincarnation is a biblically backed position?
Because so many verses in the Bible are tied to Reincarnation, they lack a simple interpretation. Instead, as we see in this thread, we have cop-outs and excuses. They are nothing but alibis, covering up the lies that have been promoted for centuries. Round and round it goes.
Add to this the fact that most who call themselves Christians, have way too much hatred in their Hearts to ever be able to perceive a God that Loves. They are perfectly comfortable with a Soul forever being tormented or annihilated, as the word Forgive and Grace has no place in their lives. The World mocks Christianity for this very reason.
The simple Truth is just as you posted in the OP. Jesus plainly said that John the Baptist *IS* Elijah. Any other interpretation is not only calling Jesus a liar, but it now opens the door for anyone else to claim they are Elijah because the only requirement now is to basically have a 'zest for the Word'.
In other words, what is being taught now is that when One comes in the "Spirit and Power" of Elijah, it simply means One is 'enthusiastic' and 'on fire for the LORD!'. A dangerous precedent is now set.
Imagine applying this logic to other famous people in the Bible and everything begins to fall apart.
This Gentlemen is a bit on the Gnostic side, but still makes some very good points...