Some children, going to church, get pretty wet! (6)
I believe the answer is:
drench
'wet' is the definition.
(drenching is a kind of wetting)
'some children going to church get pretty' is the wordplay.
I cannot quite understand how this works, but
'children' could be 'ch' (genealogical abbreviation) and 'ch' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for drench that I've seen before include "Soak, souse" , "Soak, douse" , "draught?" , "Wet thoroughly, soak" , "Soak with liquid" .)