MRK 9:11

11 [The three disciples had just seen Elijah, but Elijah had not done anything to prepare people to accept Jesus. So] they asked Jesus, “The men who teach the [Jewish] laws say that Elijah must come back to the earth before [the Messiah comes to earth. But you have been here a long time and Elijah came just today. So is what they are teaching wrong?]”