Worship always incorporated into religious teaching (6)
I believe the answer is:
revere
'worship' is the definition.
(synonyms)
'always incorporated into religious teaching' is the wordplay.
'always' becomes 'ever' (synonyms).
'incorporated into' is an insertion indicator.
'religious teaching' becomes 're' (religious education).
'ever' put into 're' is 'REVERE'.
(Other definitions for revere that I've seen before include "Pay homage to" , "Hold in very high regard" , "Paul, perhaps" , "Respect, admire deeply" , "Greatly admire" .)