I was probably about twelve when I was in my church confirmation class, and I remember asking my pastor about the Trinity. I couldn't get how one and one and one, can be One, and not three, and I definitely couldn't get why it was important to say that God is three and God is One, if it was something that by definition was a mystery, something we can't understand.

The answer I remember well. I was told that the Trinity is like H20 – it can be ice or water or steam, but it's all water. Well, that makes …