John Wesley on Jude 1:11

Woe unto them - Of all the apostles St. Jude alone, and that in this single place, denounces a woe. St. Peter, to the same effect, pronounces them "cursed children." For they have gone in the way of Cain - The murderer. And ran greedily - Literally, have been poured out, like a torrent without banks. After the error of Balaam - The covetous false prophet. And perished in the gainsaying of Korah - Vengeance has overtaken them as it did Korah, rising up against those whom God had sent.