Only Jesus was there (Mk 9:8-9:8)

“Suddenly,

When they looked around,

They saw no one

With them,

But only Jesus.’”

 

καὶ ἐξάπινα περιβλεψάμενοι οὐκέτι οὐδένα εἶδον ἀλλὰ τὸν Ἰησοῦν μόνον μεθ’ ἑαυτῶν.

 

This leaving of Moses and Elijah can be found in all 3 synoptic gospels, Matthew, chapter 17:8, Luke, chapter 9:36, and here in Mark.  Matthew was more elaborate than the others, so that there are some differences in all 3 accounts.  Suddenly or unexpectedly (καὶ ἐξάπινα) when they looked around (περιβλεψάμενοι), they no longer saw anyone (οὐκέτι οὐδένα εἶδον), but only Jesus himself alone with them (ἀλλὰ τὸν Ἰησοῦν μόνον μεθ’ ἑαυτῶν).  Where were Moses and Elijah?  Was this just a dream?