Have you measured the earth, Job, and can you tell its dimensions: its length and breadth, its circumference, the number of its rivers, the height of its mountains and the depths of its oceans? Again, we have to acknowledge that in our day knowledge has increased (Daniel 12:4), and many things that were hidden from Job are known to us. But still much remains unknown and certainly to the average human being what we know is only hearsay and not personal experience.