Zber was born in Płock, a small town in Poland, on June 23, 1909. He grew up in a traditional Jewish home with three siblings - two brothers and a sister - and his two parents. Zber's mother, Hina, was a homemaker who focused on raising her children. They owned a small local grocery store, which was the source of their income. Wolf, Zber's father, was known to be a man of integrity and he was elected parnas (religious and civic leader) for the community of Płock.
