Biblical land of riches (5)
I believe the answer is:
ophir
'biblical land of riches' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ophir that I've seen before include "place of cargo-bearing vessel" , "Hence quinquireme's cargo (Masefield)" , "Rich city from which Masefield's quinquireme was coming" , "Quinquireme of Nineveh from distant - (Masefield)" , "Biblical land" .)