Delighted with biblical priest (3)
I believe the answer is:
'biblical priest' is the definition.
(I've seen this before)
'delighted with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'ELI' is hidden in the letters of 'delighted'.
(Other definitions for eli that I've seen before include "Samuel's teacher (OT)" , "Man" , "Highest priest at Shiloh" , "Old Testament priest, the prophet Samuel's teacher" , "Priest, teacher of Samuel" .)