Sarcasm in night by Elie Wiesel?

In "Night" by Elie Wiesel, sarcasm is used sparingly but effectively to highlight the absurdity and cruelty of the situations faced by the prisoners in the concentration camps. One example is when Eliezer comments on the irony of the sign at Auschwitz that reads, "Arbeit macht frei" (work sets you free), showing the stark contrast between the promise of freedom through work and the harsh reality of enslavement and death.