When did Corrie ten Boom say Never be afraid to trust an unknown future to known God?

Corrie ten Boom is credited with the quote "Never be afraid to trust an unknown future to a known God," though there isn't a specific date tied to when she first said it. This statement reflects her deep faith and resilience, particularly evident during her experiences in World War II when she and her family helped hide Jews from the Nazis. The quote has since resonated with many as a message of hope and trust in God's plan amidst uncertainty.