One day the men of the city said to Elisha, "You can see for yourself, master, how well our city is located. But the water is polluted and nothing grows." 2 Kings 2:19 (MSG)
It doesn't matter how well situated I am in life and how good things look from the outside. If I am drinking unclean water on a daily basis, then my whole life will be poisoned at the core.
"Anyone who drinks the water I give will never thirst—not ever. The water I give will be an artesian spring within, gushing fountains of endless life." – Jesus