Matthew 17:10-13

ISV(i) 10 So the disciples asked him, “Why, then, do the scribes say that Elijah must come first?”
11 He answered them, “Elijah is indeed coming and will restore all things. 12 But I tell you that Elijah has already come, yet people did not recognize him and treated him just as they pleased. In the same way, the Son of Man is going to suffer at their hands.” 13 Then the disciples understood that he had been speaking to them about John the Baptist.