The African impala can jump to a height of over 10 feet and cover a distance of greater than 30 feet. Yet these magnificent creatures can be kept in an enclosure in any zoo with a 3-foot wall. The animals will not jump if they cannot see where their feet will fall.
Faith is the ability to trust what we cannot see, and with faith we are freed from the flimsy enclosures of life that fear allows to entrap us. (Unknown source)