During the Second World War, Corrie ten Boom’s family owned a watchmaking business in the Netherlands, and they actively worked to protect Jewish families. Eventually, the entire ten Boom family was sent to a concentration camp, where Corrie’s father died 10 days later. Her sister Betsie also died in the camp. While Betsie and Corrie were in the camp together, Betsie’s faith helped to strengthen Corrie’s.