Among gods, he was in authority (4)
I believe the answer is:
thor
'among gods he' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'in authority' is the wordplay.
'in' says the answer is hidden in the clue.
'THOR' is hidden in the letters of 'authority'.
'was' acts as a link.
Can you help me to learn more?
(Other definitions for thor that I've seen before include "Norse god of war" , "Scandinavian thunder-god" , "Divine figure" , "Germanic thunder god; early US IRBM" , "Norse hammer-wielding god" .)