Priest found in chapel indefinitely (3)
I believe the answer is:
eli
'priest' is the definition.
(biblical figure)
'in chapel indefinitely' is the wordplay.
'in' says the answer is hidden in the clue.
'ELI' is hidden within 'chapel indefinitely'.
'found' acts as a link.
(Other definitions for eli that I've seen before include "OT high priest" , "Highest priest at Shiloh" , "Religious character" , "Samuel's teacher (OT)" , "Man" .)