Religious leader with holy book, as opposed to ordinals (8,7)
I believe the answer is:
cardinal numbers
'ordinals' is the definition.
(I know this)
'religious leader with holy book as opposed' is the wordplay.
I cannot really understand how this works, but
'leader' could be 'cardinal' (cardinal is a kind of leader) and 'cardinal' is located in the answer.
'book' could be 'numbers' (book of the Bible) and 'numbers' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'to' acts as a link.
Can you help me to learn more?
(Other definitions for cardinal numbers that I've seen before include "Two and three, for example" , "Figures" , "One or two perhaps" .)