what are a few examples/ signs the protagonists is beginning to transform?

As Elie enters Birkenau, he begins to doubt his God and his faith. He sees the horrors around him and questions how his God could let this happen to his own people. The transformation between Elie has begun.

For the first time, I felt anger rising within me. Why should I sanctify His name? The Almighty, the eternal and terrible Master of the Universe, chose to be silent. What was there to thank Him for? (ch 3)

Elie strugles to maintain his own humanity as well as shreds of his faith for the rest of the novel.