Who was Rabbi Eliahou and what did he do in this story?

Rabbi Eliahou is a character in Elie Wiesel's memoir "Night." He is a compassionate figure who serves as a symbol of faith and perseverance amidst the horrors of the Holocaust. In the story, he searches for his son in the concentration camp, highlighting the deep bonds of familial love and the despair of separation. His plight underscores the tragic impact of the Holocaust on individual lives and relationships.