Near the beginning of the memoir, Moishe the Beadle loses his faith after he witnesses horrific acts of inhumanity. Moishe the Beadle tries to tell everyone in the ghetto all of the terrible things that had happened to him and everyone else that was taken with him, but no one would believe him. Not even Eliezer. It wasn't until Elie and his family were sent to a camp that he believed Moishe fully. In Night, Eliezer Wiesel shows the exposure to an uncaring, unfriendly world that leads to the destruction of faith and identity.
Elie was so full of life before his time in the concentration camps. And by the end of the novel, he is completely broken. For instance, in the novel, he says, "I did not weep, and it pained me that I could not weep. But I was out of tears." Elie was so broken that he could not even cry over the death of his father. Another example is when Eliezer says, "From the depths of the mirror, a corpse was contemplating me." This just shows how Elie was barely living in the end.
Eliezer goes through so much from the second he goes to the ghettos and to the concentration camps. Throughout that entire time, he goes through a lot of internal conflicts. "Never shall I forget the small faces of the children whose bodies I saw transformed into smoke under a silent sky." Elie shows that seeing all of the events happen makes him not be able to sleep at night and forever imagine the horrors at the concentration camps. "Never shall I forget those moments that murdered my God and my soul and turned my dreams to ashes." Eliezer has lost all of his faith at this point.