And His disciples asked Him, saying, "Why then do the scribes say that Elijah must come first?"
Matthew 17:10
Surrounding context
17:9 Now as they came down from the mountain, Jesus commanded them, saying, "Tell the vision to no one until the Son of Man is risen from the dead."
17:10 And His disciples asked Him, saying, "Why then do the scribes say that Elijah must come first?"
17:11 Jesus answered and said to them, "Indeed, Elijah is coming first and will restore all things.