Jürgen Moltmann:
A shattering expression of the theologia crucis which is suggested in the rabbinic theology of God’s humiliation of himself is to be found in Night, a book written by [Elie] Wiesel, a survivor of Auschwitz:
The SS hanged two Jewish men and a youth in front of the whole camp. The men died quickly, but the death throes of the youth lasted for half an hour. “Where is God? Where is he?” someone asked behind me. As the youth still hung in torment in the noose after a long time, I heard the man call again, “Where is God now?” And I heard a voice in myself answer: “Where is he? He is here. He is hanging there on the gallows . . .”
Any other answer would be blasphemy.