The cross and resurrection are the eternal dialogue of the Father and Son as projected on to the screen of history, what it looks like in history. If you want to know [w]hat the Trinity looks like be filled with the Holy Spirit and look at the cross. The Trinity, when reflected in our history, like something reflected in rippling water, looks pretty strange, just as the human being in our history looks strange, being despised and crucified: Ecce homo.
-Herbert McCabe, God Matters, pp. 100