Nearly all go back to church to celebrate (7)
I believe the answer is:
rejoice
'celebrate' is the definition.
(I've seen this in another clue)
'nearly all go back to church' is the wordplay.
I cannot really understand how this works, but
'church' could be 'ce' (abbreviation for Church of England) and 'ce' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
'to' acts as a link.
Can you help me to learn more?
(Other definitions for rejoice that I've seen before include "Show great elation" , "Show great happiness" , "Be happy" , "Exult -- make merry" , "Exult, show great joy" .)