Worries about abandoning God (4)
I believe the answer is:
ares
'god' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for ares that I've seen before include "Greek god of war" , "figure of worship" , "Land measures" , "Belligerent god" , "Olympian" .)