Chuck’s reaction was… unexpected. Castiel was fairly certain that this was deeply serious business, and definitely not a subject worthy of mirth. Few accounts of the exultation of older, greater prophets had included the moment where they chortled at the incredulity of it all.
He tilted his head to the side, frowning, regarding Chuck with a degree of confusion usually reserved for Dean alone. “We do not make a habit of joking where the Will Of Heaven is involved. Prophecy is a serious subject.”