Why did Elie like Moshe in Night?
The character of Moshe the Beadle is quite interesting and, through Wiesel's signature writing style, he is introduced to the readers as half-serious, half-comical but with an overall importance to the plot that will contrast tremendously with his actual role within the novel.
According to Elie's own words,
I liked his wide, dreamy eyes, gazing off into the distance. He spoke little. He sang, or rather he chanted, and the few snatches I caught here and there spoke of divine suffering, of the Shekhinah in Exile...
Additionally, Elie narrates that Moshe was a very poor man who made sure that his penury would not affect anyone; he stayed away from people's ways, and made himself "invisible" to others. This is the reason why people felt compelled to help him, and the main reason why, although he is not taken seriously, he is nevertheless liked for one reason or another by the others.