Mark 9:11-13

11 Then they asked him, "Why do the scribes say that Elijah must come first?"

12 He said to them, "Elijah is indeed coming first to restore all things. How then is it written about the Son of Man, that he is to go through many sufferings and be treated with contempt?

13 But I tell you that Elijah has come, and they did to him whatever they pleased, as it is written about him."