Person does not want (to) Sin. Innocent is a type of Person. 
Plaintiff is the opposite of Suspect. Suspect is a synonym of Doubt. Doubt is related to Question. Question is related to Pray. 
Sin <--NotDesires-- Person <--IsA-- Innocent 
Plaintiff <--Antonym--> Suspect <--Synonym--> Doubt <--RelatedTo--> Question <--RelatedTo--> Pray 