1:13. Raging waves of the sea, foaming out their own confusion: wandering stars, to whom the storm of darkness is reserved for ever.
1:14. Now of these Enoch also, the seventh from Adam, prophesied, saying: Behold, the Lord cometh with thousands of his saints:
Prophesied… This prophecy was either known by tradition, or from some book that is since lost.
1:15. To execute judgment upon all and to reprove all the ungodly for all the works of their ungodliness, whereby they have done ungodly: and for all the hard things which ungodly sinners have spoken against God.
1:16. These are murmurers, full of complaints, walking according to their own desires: and their mouth speaketh proud things, admiring persons, for gain's sake.
1:17. But you, my dearly beloved, be mindful of the words which have been spoken before by the apostles of our Lord Jesus Christ:
But you, my dearly beloved, be mindful, etc… He now exhorts the faithful to remain steadfast in the belief and practice of what they had heard from the apostles, who had also foretold that in aftertimes (lit. in the last time) there should be false teachers, scoffing and ridiculing all revealed truths, abandoning themselves to their passions and lusts; who separate themselves from the Catholic communion by heresies and schisms. Sensual men… carried away and enslaved by the pleasures of the senses.
1:18. Who told you that in the last time there should come mockers, walking according to their own desires in ungodlinesses.
1:19. These are they who separate themselves, sensual men, having not the Spirit.
1:20. But you, my beloved, building yourselves upon your most holy faith, praying in the Holy Ghost,