The novel contains many religious references to God, sin, Providence and salvation. It can be considered a spiritual autobiography: the protagounist reads the Bible to find comfort and guidance(Crusoe's own story can be considered, in some passage, similar to the parable of the prodigal son). The novel begins with Crusoe's rebellion against his father, which can also be read as an act of rebellion against God. Then he suffers a series of misfortunes that land him on the deserted island. Once there, he finally atones for his sins and undergoes a serious religious conversion. Crusoe experiences the costant conflict between good and evil, and keeps a diary to record events in order to see God's will in them. With "Robinson Crusoe" Defoe explores the conflict between economic motivation and spiritual salvation. The island is the perfect place for Robinson to prove his qualities and to demostrate that he deserves salvation and that he is worth of God's Providence. Dofoe shows that, thought God is the prime cause of everything , man can modify his destiny trought action.
Robinson embodies the English mercantile spirit and is the archetype pioneer: he is armed with his own strenght and intelligence and has a Puritan's firm conviction that he has God on his side. On the island Robinson organises a primitive empire and becomes the prototype of the English coloniser: the society he creates on the island is not an alternative to the English one but, on the contrary, an exaltation of England and its ideals. Robinson is also the archetyper colonist: his relation with Friday portraits the one between colonist and native. Robinson's education of Friday closely recalls the processes of modern colonialism: Crusoe gives Friday a new name, meant to remind him of his debt to the white man; Robinson gives Friday European clothes; Robinson teaches Friday his language; Robinson teaches Friday the principles of Christianity; Robinson never gives Friday a weapon. So Robinson has a technical, linguistic and cultural advantage on Friday.