Darkness

Darkness in my conception is like Death himself in disguise. In Night he was always there for the Jews. Waiting on them to give up their life to him because he was willing to make life easier on them if they just gave up to him. The darkness drives people crazy sometimes and that could be Death that does so. When the Jews had to run in the snow in the darkness for miles on end, Death had been waiting for them to give up to him.