Mark 9:4

And there appeared unto them Elias with Moses ,.... Or Moses and Elias, as all the Oriental versions read, as in Mat_. 17:3; see Gill on Matthew 17:3 ,

and they were talking with Jesus ; concerning his decease, and what he was to do and suffer at Jerusalem, and of which he himself had lately talked with his disciples; so that this might have been a confirmation of these things to them; See Gill on Matthew 17:3 .