The theme of loyalty is again present when Eliezer and his father reach the concentration camp Buchenwald and Eliezer wanted to leave his father and get sleep and keep the food to save himself but he didn't so his father could live. And the theme of God not present is again evident because the German officers beat the crap out of his father and leave him to die and he wonders how this could happen.
Yom Kippur, also known in English as the Day of Atonement, is the most solemn and important of the Jewish holidays. Its central themes are atonement and repentance. Jews have traditionally observed this holiday with a 24-hour period of fasting and intensive prayer.