Complex sentence: Franich perceived Lori's extramarital affair with Shane Walsh as an allegorical anecdote to Original Sin--a Christian theological concept of damnation--which then transitions into a "optimistic New Testament vision of hope" as Lori comes to terms with her destiny.
Split into simpler sentences: Franich perceived Lori's extramarital affair with Shane Walsh as an allegorical anecdote to Original Sin--a Christian theological concept of damnation. It transitions into a "optimistic New Testament vision of hope" as Lori comes to terms with her destiny.