In this passage, Spiegelman uses both images and words to draw spirituality, hope, and imprisonment together, and thus conveys a strong message--in times of darkness and struggle, people seek to pin their desires onto symbolic objects, even those out of their control.
The arrival of the priest into Vladek's life provides a sense of support and comfort. Although the priest himself isn't even a Jew, the words he provides to Vladek instill in the young prisoner a faith, and a continued will, to continue fighting for survival.
Ironically, the numbers on Vladek's arm were not traditionally mean't as a symbol of hope. They drew their beginnings as dehumanizing figures, symbols meant to marginalize the Jews as a race. However, the priest offers Vladek more than saintly advice--he also allows Vladek to convert the dehumanizing numbers into powerful symbols of freedom. Vladek "started to believe"(Spiegelman) in his "very good omen"(Spiegelman).
It is this contrast and juxtaposition that seems to characterize Spiegelman's message throughout the book. In its pages, the good and the evil of both sides merge, and hope to extend their wills by forcing it on to others. The identity of symbols, such as those on the prisoner's arms, are as important in the book as the people themselves. They are the lifeblood of the survivors, the hope that flows through their veins.
-Chris
