The reading is from St. Jude's First Universal Letter 1:11-25

Beloved, woe to the ungodly, for they walk in the way of Cain, and abandon themselves for the sake of gain to Balaam's error, and perish in Korah's rebellion. These are blemishes on your love feasts, as they boldly carouse together, looking after themselves; waterless clouds, carried along by winds; fruitless trees in late autumn, twice dead, uprooted; wild waves of the sea, casting up the foam of their own shame; wandering stars for whom the nether gloom of darkness has been reserved for ever.

It was of these also that Enoch in the seventh generation from Adam prophesied, saying, "Behold, the Lord came with his holy myriads, to execute judgment on all, and to convict all the ungodly of all their deeds of ungodliness which they have committed in such an ungodly way, and of all the harsh things which ungodly sinners have spoken against him." These are grumblers, malcontents, following their own passions, loud-mouthed boasters, flattering people to gain advantage.

But you must remember, beloved, the predictions of the apostles of our Lord Jesus Christ; they said to you, "In the last time there will be scoffers, following their own ungodly passions." It is these who set up divisions, worldly people, devoid of the Spirit. But you, beloved, build yourselves up on your most holy faith; pray in the Holy Spirit; keep yourselves in the love of God; wait for the mercy of our Lord Jesus Christ unto eternal life. And convince some, who doubt; save some, by snatching them out of the fire; on some have mercy with fear, hating even the garment spotted by the flesh.

Now to him who is able to keep you from falling and to present you without blemish before the presence of his glory with rejoicing, to the only God, our Savior through Jesus Christ our Lord, be glory, majesty, dominion, and authority, before all time and now and for ever. Amen.