Theophylact of Ohrid, on Jude 1:11

“Woe unto them, for they have gone in the way of Cain: and after the error of Balaam they have for reward poured out themselves, and have perished in the contradiction of Core.”

“Woe to them, because they went in the way of "Cain" through fratricide; for, teaching impious doctrine to brethren, that is, to fellow men, they kill them with their evil teachings, or: by devouring the seed, they kill their brethren in potentiality, that is, those whom the seed, brought to maturity, would have brought into life. They went in the way of "Balaam," because they too do what they do for the sake of gain, like Balaam. They went in the way of "Korah," because, like him, being unworthy, they seized for themselves the dignity of the teaching office.”

Imported from an open dataset — not yet checked against the printed edition.