Musar sur Les Nombres 19:1

And now we shall explain in brief the episode of the spies. For, on the surface, it is cause for great wonder: What is it that caused them to sink to such depths and to mislead Israel? More than that — even Sanhedrin erred in this, it being written (Bamidbar 19:1): "And the entire congregation [the Sanhedrin (Rashi)] lifted their voices, etc." And more than this, they said (Ibid. 13:31): "For they are stronger than He," which our sages of blessed memory interpreted as: "He is unable, as it were, to rescue His vessels from there." How could they speak such nonsense?