Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[59] HOWEVER, this sedition was so far from ceasing upon this destruction, that it grew much stronger, and became more intolerable. And the occasion of its growing worse was of that nature, as made it likely the calamity would never cease, but last for a long time; for the men, believing already that nothing is done without the providence of God, would have it that these things came thus to pass not without God's favor to Moses; they therefore laid the blame upon him that God was so angry, and that this happened not so much because of the wickedness of those that were punished, as because Moses procured the punishment; and that these men had been destroyed without any sin of theirs, only because they were zealous about the Divine worship; as also, that he who had been the cause of this diminution of the people, by destroying so many men, and those the most excellent of them all, besides his escaping any punishment himself, had now given the priesthood to his brother so firmly, that nobody could any longer dispute it with him; for no one else, to be sure, could now put in for it, since he must have seen those that first did so to have miserably perished. Nay, besides this, the kindred of those that were destroyed made great entreaties to the multitude to abate the arrogance of Moses, because it would be safest for them so to do.