Mark 9:8-12

And suddenly they looked around and saw no one with them anymore, except Jesus alone.

As they were coming down from the mountain, He gave them orders not to relate to anyone what they had seen, until the Son of Man rose from the dead.

They seized upon that statement, discussing with one another what rising from the dead meant.

And they asked Him, saying, “Why is it that the scribes say that Elijah must come first?”

And He said to them, “Elijah does come first and he restores all things. And yet how is it written of the Son of Man that He will suffer many things and be treated with contempt?