Elder brother of Moses (5)
I believe the answer is:
aaron
'elder brother of moses' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for aaron that I've seen before include "Fanfare for the Common Man composer" , "Brother of Moses, led the Jews to the Promised Land" , "high priest" , "Brother of Moses who founded the Jewish priesthood" , "OT character" .)