Response from online church — 'love' (4)
I believe the answer is:
echo
'response' is the definition.
(echo is a kind of response)
'online church love' is the wordplay.
'online' becomes 'e' (abbreviation for electronic, e.g. in ecommerce).
'church' becomes 'ch' (common abbreviation).
'love' becomes 'o' (In tennis, 'love' means 'zero').
'e'+'ch'+'o'='ECHO'
'from' acts as a link.
(Other definitions for echo that I've seen before include "Be suggestive of" , "Repeat or reverberate" , "Say again or imitate" , "call back" , "Reminder" .)