What remains of biblical figure in church? (5)
I believe the answer is:
relic
'what remains' is the definition.
'biblical figure in church?' is the wordplay.
'biblical figure' becomes 'eli' (I am not sure about this - if you are sure you should believe this answer much more).
'in' means one lot of letters goes inside another.
'church?' becomes 'RC' (abbreviation for Roman Catholic).
'eli' inserted within 'rc' is 'RELIC'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for relic that I've seen before include "Keepsake, of a saint say" , "item of historic interest" , "Surviving artefact" , "Something of antiquity, religious or sentimental" , "Venerated remains" .)