Jude 1:11

Woe unto them! for they have gone in the way of Cain, and ran greedily after the error of Balaam for reward, and perished in the gainsaying of Core.

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.