Sacred hymn (5)
I believe the answer is:
psalm
'sacred hymn' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for psalm that I've seen before include "Lamps (anag) -- song" , "Old Testament hymn" , "OT hymn" , "Devotional hymn or song" , "Jewish hymn" .)