Many indeed are the wondrous happenings of that time: God hanging from a cross, the sun made dark and again flaming out; for it was fitting that creation should mourn with its creator. The temple veil rent, blood and water flowing from his side: the one as from a man, the other as from what was above man; the earth shaken, the rocks shattered because of the rock; the dead risen to bear witness to the final and universal resurrection of the dead. The happenings at the sepulcher and after the sepulcher, who can fittingly recount them? Yet no one of them can be compared to the miracle of my salvation. A few drops of blood renew the whole world, and do for all men what the rennet does for the milk: joining us and binding us together.
Gregory of Nazianzus, On the Holy Pasch, Oration 45.I, quoted in Thomas C. Oden & Christopher A. Hall (ed), Mark, Ancient Christian Commentary on Scripture (Intervarsity Press, 2005) 224.