Marcos 9:11

Rather than asking for clarification about the resurrection issue, the disciples raised questions about the larger problem of Messiah dying. If Jesus was the Messiah and He would die, what did the scribes’ teaching about Elijah being the forerunner of Messiah mean (Malachi 3:1-4; Malachi 4:5-6)? They taught that he would turn the hearts of the people back to God (cf. Malachi 4:6), but Elijah had not appeared and most of the people had not repented.