Yeah, I know, it's all been done, right? I just had a thought, and I thought I'd present it to the trinitarians as an exercise. We all know (I hope) that the word "trinity" does not appear anywhere in the Bible. I will concede the point that this, in ITSELF, does not mean the idea of trinity is wrong. So my challenge is this: CAN you explain the idea of trinity using ONLY biblical concepts? In other words, I don't want to hear about a "G-dhead" because that's not in the Bible either. Nor am I looking for extra-biblical analogies. An analogy is okay... if it's biblical. But I've heard probably dozens of trinity analogies, and it doesn't make it any more biblical.