An opening, we hear, for worship (5)
I believe the answer is:
adore
'for worship' is the definition.
(I've seen this before)
'an opening we hear' is the wordplay.
'opening' indicates taking the first letters.
'we hear' becomes 'dore' (I am not sure about this - if you are sure you should believe this answer much more).
The first letter of 'an' is 'a'.
'a'+'dore'='ADORE'
Can you help me to learn more?
(Other definitions for adore that I've seen before include "Like a lot" , "Love, revere intensely" , "Very much like" , "Treasure" , "Love greatly" .)