Many indeed are the miracles of that time:  God crucified; the sun darkened and again rekindled; for it was fitting that the creatures should suffer with their Creator; the veil rent; the Blood and Water shed from His Side; the one as from a man, the other as above man; the rocks rent for the Rock's sake; the dead raised for a pledge of the final Resurrection of all men; the Signs at the Sepulchre and after the Sepulchre, which none can worthily celebrate; and yet none of these equal to the Miracle of my salvation.  A few drops of Blood recreate the whole world, and become to all men what rennet is to milk, drawing us together and compressing us into unity.

-- Gregory Nazianzen, Oration 45 (the Second Oration on Easter)