Temple reading (5)
I believe the answer is:
torah
'temple reading' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for torah that I've seen before include "The law of God as revealed to Moses" , "Pentateuch" , "Jewish law" , "The will of God as revealed in Mosaic law" , "Law as revealed to Moses (Judaism)" .)