He he he! How can you not appreciate God’s wit? He promises to send Elijah and then sends someone to cover the prophecy in a fancy different way, but then He still literally fulfills it by having Elijah and Moses talk to Christ on the Mount of Transfiguration. And, as if that is not enough, you should keep in mind that many prophecies speak of Christ’s first visit to Earth and His future return as one event. With that being said, what suggests Elijah might seriously be back before the Day of the LORD at the end of time?