Brief Summary:

The Pilgrim’s Progress by John Bunyan is a Christian allegory about a man named Christian who goes on a journey to reach the Celestial City (basically Heaven). Along the way, he faces challenges that represent struggles people deal with in life, like despair, temptation, and doubt. Each part of his journey teaches a lesson about faith, perseverance, and redemption. 

II. Then: Locate an example of where the allusion occurs in Wuthering Heights

The most significant parallel between Wuthering Heights and The Pilgrim’s Progress is the characters’ emotional and spiritual expeditions. Particularly the parallel between Heathcliff and Christian and the similarity in terms of their burdens and journeys. For example, Heathcliff's emotional path mirrors the allegorical quest of Christian in a much darker form. In addition, the moors and desolate landscapes in Wuthering Heights echo the Slough of Despond from The Pilgrim’s Progress, symbolizing emotional and spiritual despair. Heathcliff, like Christian is burdened by his inner turmoil and isolation, with the moors representing his struggle to escape the weight of grief. In a way, Heathcliff is Bronte's conception of what Christian would have been had he succumbed to the struggles of human life and not the lessons Christian did.

III. Then: Answer the following question: Why is the allusion used and how does it help develop some aspect of the novel? 

The allusion to The Pilgrim’s Progress is used and developed throughout Wuthering Heights to emphasize Healthcliff’s own spiritual journey. Early in the novel, healthcliff’s burdens begin when he is being mistreated by Catherine, which is similar to when Christian struggles to carry the weight of his sins. However, as the novel progresses, Healthcliff’s path diverges from Christian’s. As his burdens lead him toward revenge rather than redemption which we see in Christian.