“So why water? I mean, of all the possible drinks Jesus could have chosen for his analogy, he picks water. Not the living coffee. Not the living hot chocolate. Not even the living soft drink. Nope, Jesus chooses living water. And he does it for an important reason.
You see, the human body is fuelled by water. In fact, we cannot survive more than 3 days without it. Same story with the environment. Everything would shrivel up and die if there was no rain. Our world and everything in it is designed to need water.”