My friend’s father learned in the Yeshiva of the famous Baal Bitachon R’ Gershon Liebman Zatzal, who defied the Nazis during W.W.II. He remembers when food was scarce. There was a baker though, who had agreed to always supply the Yeshiva with bread, and this kept them going. One day, the baker said that he can no longer supply the Yeshiva with bread. Everyone was devastated, except…. R’ Gershon.
Although they had nothing to eat for supper, R’ Gershon was totally calm, and it didn’t bother him in the least. He said that he had Bitachon, and surely bread would be coming again! The next day, a surprise shipment of bread came to the Yeshiva from an unbelievable source.
There were many such stories with R' Gershon. His Yeshiva in Fublaines was in a far-away place. Yet, with R' Gershon’s Bitachon they would suddenly get food, like when a truck driver who was delivering food to a different Yeshiva suddenly got lost, and ended up in Fublaines.
This is because R' Gershon never had Bitachon in the baker, but always thanked only Hashem. So when the baker becomes unavailable, Hashem is still there. His Hashpa'a remains, albeit from a different source.
During the war years, he was known for giving away his own meals; and people would stand on line in the concentration camp to receive part of his food. Because of his great Bitachon, he wasn’t worried about himself, and Hashem always helped him with all kinds of Nissim. R' Gershon had tremendous love for people. In later years, the Yeshiva’s finances took an upward swing to unusual proportions, and R' Gershon became a multi-millionaire.