In Charlotte Bronte's Jane Eyre, there exist many dominant themes, specifically religion.
Ask yourself about the purpose of this sentence. The purpose seems to be to tell the reader that many themes are dominant. That is not what to say! Instead, give a simple sentence that makes a real observation.
This is the way to correct this sentence:
Bronte
Exhibits exhibits, through Jane's experiences with the characters
of Brocklehurst, Helen
, and St. John
, her rejection of the conventional Christian religion, yet through
herself (replace this with a word that is more descriptive) she finds her own connection to God.
:-)