What the church may have to aim at (6)
I believe the answer is:
aspire
'aim at' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for aspire that I've seen before include "I spare (anag.)" , "Aim at high things" , "Have lofty aims" , "Desire (to reach higher things)" , "Aim at, work towards" .)