Major - I am not arguing re-incarnation with respect to this thread but Christ in scripture indicates that Elijah would come again as already predicted in the OT.
Mat_17:11
And Jesus answered and said unto them, Elias truly shall first come, and restore all things.
Mat_17:12
But I say unto you, That Elias is come already, and they knew him not, but have done unto him whatsoever they listed. Likewise shall also the Son of man suffer of them.
Mar_9:4
And there appeared unto them Elias with Moses: and they were talking with Jesus.
Mar_9:5
And Peter answered and said to Jesus, Master, it is good for us to be here: and let us make three tabernacles; one for thee, and one for Moses, and one for Elias.
Mar_9:11
And they asked him, saying, Why say the scribes that Elias must first come?
Mar_9:12
And he answered and told them, Elias verily cometh first, and restoreth all things; and how it is written of the Son of man, that he must suffer many things, and be set at nought.
Mar_9:13
But I say unto you, That Elias is indeed come, and they have done unto him whatsoever they listed, as it is written of him.