Matthew 17:12
King James Version
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.
Matthew 17:12 in context
10And his disciples asked him, saying, Why then say the scribes that Elias must first come?
11And Jesus answered and said unto them, Elias truly shall first come, and restore all things.
12But 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.
13Then the disciples understood that he spake unto them of John the Baptist.
14And when they were come to the multitude, there came to him a certain man, kneeling down to him, and saying,
The Gospel of Matthew — summary, themes & key verses
Jesus the promised King — the Gospel that shows how he fulfils the whole Old Testament.
