I never said that John was Elijah, John said he wasn't Elijah, yet Jesus said he was. And I believe that the spirit of Elijah was in John, ministering to him what to say.
Doesn't this ever happen to you? And I don't mean Elijah being in us, but rather we are given what to speak. It happens to me, I just speak or sometimes type what comes into my heart and the versus that I need pop into my mind and sometimes I can't type enough for what I'm trying to say. I believe that this is God giving us what we need to say.
If you mean that the dead Elijah was whispering to John the Baptist, then I don't believe that at all. If you mean that the spirit of Elijah that was given in double portion to Elisha was working with John the Baptist, then I could say yes, with the understanding that that spirit was the Holy Spirit.
2Ki 2:9-15 KJV
(9) And it came to pass, when they were gone over, that Elijah said unto Elisha, Ask what I shall do for thee, before I be taken away from thee. And Elisha said, I pray thee, let a double portion of thy spirit be upon me.
(10) And he said, Thou hast asked a hard thing: nevertheless, if thou see me when I am taken from thee, it shall be so unto thee; but if not, it shall not be so.
(11) And it came to pass, as they still went on, and talked, that, behold, there appeared a chariot of fire, and horses of fire, and parted them both asunder; and Elijah went up by a whirlwind into heaven.
(12) And Elisha saw it, and he cried, My father, my father, the chariot of Israel, and the horsemen thereof. And he saw him no more: and he took hold of his own clothes, and rent them in two pieces.
(13) He took up also the mantle of Elijah that fell from him, and went back, and stood by the bank of Jordan;
(14) And he took the mantle of Elijah that fell from him, and smote the waters, and said, Where is the LORD God of Elijah? and when he also had smitten the waters, they parted hither and thither: and Elisha went over.
(15) And when the sons of the prophets which were to view at Jericho saw him, they said, The spirit of Elijah doth rest on Elisha. And they came to meet him, and bowed themselves to the ground before him.
Elijah wasn't dead or in the third heaven at this point, as later in the scripture a king receives a letter from him. Yet it still speaks of spirit but in the sense that it can be received in double portion. So it seems that the spirit in this case isn't Elijah, it was the spirit that Elijah had received.