Now, my cries of 'Modalism' would undoubtedly fall on death ears, most people never having heard the name of the heresy in question. And as the constraints of such conversations do not normally permit much explanation, I thought it would be worth-while setting out the reasons why the Trinity is not like water in any way.
If you've never heard the water illustration, then brilliant! However, I suppose in that case my allusions to it won't make much sense. So, just for the sake of clarity, the (officially heretical - in other words this isn't just a crazy notion of mine!) faulty illustration is a comparison of the Trinity to water, which has three forms - liquid, ice and steam. But the Trinity is not like that at all, and here's why: