Dehydration can de dangerous - mild dehydration can can affect your focus, alertness and short term memory. At its worst, dehydration is deadly. In Exodus 17 we find the wandering nation of Israel panicking, grumbling and ready to stone their leader if he does not provide water! This only days after receiving a divine promise of free food every morning and night for the next 40 years! When you’re in a desert without water, you have only one choice; find water or die. So, how do you find water?