Matthew 17:10-13

And his disciples asked him, saying, Why then say the scribes that Eli´jah must first come? And Jesus answered and said unto them, Eli´jah truly shall first come, and restore all things. But I say unto you, That Eli´jah 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. Then the disciples understood that he spake unto them of John the Baptist.