He, Me, both could be that powerful and great biblical creature (8)
I believe the answer is:
behemoth
'he me both could be that powerful and great biblical creature' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'he me both could be' is the wordplay.
'could be' is an anagram indicator.
'he'+'me'+'both'='hemeboth'
'hemeboth' with letters rearranged gives 'BEHEMOTH'.
Can you help me to learn more?
(Other definitions for behemoth that I've seen before include "Something huge and monstrous" , "Great beast of the Bible" , "Anything abnormally large and powerful" , "Something of impressive size or power" , "Huge organisation" .)