"God is tripartite" confused one trying to mislead his audience (15)
I believe the answer is:
prestidigitator
'one trying to mislead his audience' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'god is tripartite confused' is the wordplay.
'confused' is an anagram indicator.
'god'+'is'+'tripartite'='godistripartite'
'godistripartite' anagrammed gives 'PRESTIDIGITATOR'.
Can you help me to learn more?
(Other definitions for prestidigitator that I've seen before include "Entertainer" , "Illusionist" , "Tricky performer" , "Conjuror" .)