Even youths will become weak and tired, and young men will fall in exhaustion. But those who trust in the LORD will find new strength. They will soar high on wings like eagles. They will run and not grow weary. They will walk and not faint.
 Even the youths shall faint and be weary, and the young men shall utterly fall:  But they that wait upon the Lord shall renew their strength; they shall mount up with wings as eagles; they shall run, and not be weary; and they shall walk, and not faint.