Subsection featuring devout group (4)
I believe the answer is:
sect
'devout group' is the definition.
'sect' can be an answer for 'group' (I've seen this in other clues). I am not sure about the 'devout' bit.
'subsection featuring' is the wordplay.
'featuring' indicates the answer is hidden within the clue.
'SECT' can be found hidden inside 'subsection'.
Can you help me to learn more?
(Other definitions for sect that I've seen before include "Dissenting division of a larger religious group" , "Fringe religious group" , "Dissenting body" , "Cult group" , "Denomination" .)