“Those who wait on the Lord … shall walk and not faint” (Isaiah 40:31). There is no thrill for us in walking, yet it is the test for all of our steady and enduring qualities. To “walk and not faint” is the highest stretch possible as a measure of strength. The word walk is used in the Bible to express the character of a person—“… John … looking at Jesus as He walked … said, ‘Behold the Lamb of God!’ ” (John 1:35–36). There is nothing abstract or obscure in the Bible; everything is vivid and real.