In the novel Night, what was so important to Elie?what happens to the foreign jews of sighet
Given the reference point you state along with the question, I presume that you are speaking of Elie at the start of the narrative. Eliezer is a child who believes in the spiritual notion of the good, and also believes in the collective solidarity of the Jewish people in Sighet. Learning from Moshe the Beadle, he believes that there is a redemptive forced and power within the universe. This helps to form much of his early belief system. It might also be the same element that prevents many of the Jewish people in Sighet from believing Moshe when he tells of what he saw. This element of denial causes them to expel or virtually shun Moshe when he details what he sees in store for all of the Jewish people from Sighet.
In the novel "Night" the foreign Jews were the first ones that were supposedly evacuated to a different but "safe" location. However, once Moshe the Beadle escapes and returns he tries to tell the community that the relocation was not safe but rather was the Nazis way of killing Jews.
Elie had been raised an Orthodox Jew. His faith was of the utmost importance. He wanted to study more and more bout it and had asked his father about attending special classes and training in his faith. He tried to hold strong to his faith, but as he watched and experienced more and more of the horrors of his life in the ghetto and the concentrations camps, he lost his faith in God.