How does Graham Greene use imagery in Brighton Rock?

Brighton Rock is rife with religious imagery and reference, but Chapter Two of Part Six is the chapter with the most overt Biblical allegory. Pinkie and Rose - for all of their malefactions - are innocents. Their world-view is skewed irrevocably from a perverse understanding of Catholic dogma by which they live their lives. Both have lived hard youths, without pleasure, and so they view pleasure - sex, drinking, and the like - as damnation far worse than any murder.

In this sense, the illegitimate marriage into which they enter in this chapter is the worst sin they can commit. It is an affront to God and can only by sealed with that most disgusting of transgressions, physical pleasure. After the ceremony, Pinkie and Rose become Adam and Eve wandering the wilderness after being cast from the Garden of Eden. They huddle against the elements and wander the night in search of shelter. Finding none, they retire to Pinkie's room to commit the most mortal sin. The final image of the chapter is an illustration of Pinkie's worldview: a wretched, suffering woman, huddled in the filth and praying the rosary. This is salvation, pathetic and miserable.