In Night, how do the Jews in the concentration camps attempt to observe their religion in spite of the brutality they face on a daily basis?

It is clear that the Jews in the concentration camps
initially at least cling to their faith as a support and a comfort in their severe
plight. Whilst they are obviously unable to observe their religion in the same way, we
are told that they do what they are able to continue their religious practices. For
example, in the first few days of their time in Aushwitz, we are
told:

readability="9">

Evenings, as we lay on our cots, we sometimes
tried to sing a few Hasidic melodies. Akiba Drumer would break out hearts with his deep
grave, voice.

Elie goes on to
comment that the men would talk about God and what he is doing in and through the
concentration camps.

One of the most poignant of these
moments, however, is when the Jewish inmates are allowed to celebrate the end
of the Jewish year - the festival of Rosh Hashanah. We are told tha the inmates had been
allowed to gather together, and that many came. This triggers off a huge crisis of doubt
in Elie as he finds it hard to join in the prayer. Likewise, the next day, the day of
Yom Kippur, Elie chooses not to fast as a symbol of his increasing disenchantment with
his faith.

Therefore the Jews did what they could to
continue observing their faith, either officially with the permission of the camp
authorities, or unofficially, as and when they could.