And they asked him, “Why do the scribes say that first Elijah must come?”
“Behold, I will send you Elijah the prophet before the great and awesome day of the Lord comes.
“Behold, I send my messenger, and he will prepare the way before me. And the Lord whom you seek will suddenly come to his temple; and the messenger of the covenant in whom you delight, behold, he is coming, says the Lord of hosts.
and if you are willing to accept it, he is Elijah who is to come.
And there appeared to them Elijah with Moses, and they were talking with Jesus.
So they kept the matter to themselves, questioning what this rising from the dead might mean.