Jude 1:4 [kjv] says, (of) "certain men [G444 -
anthrōpoi ]
crept in unawares"...
Jude 1:8-19, esp v.19 -
8 Likewise also these
filthy dreamers defile the flesh, despise dominion, and speak evil of dignities. 9 Yet Michael the archangel, when contending with the devil he disputed about the body of Moses, durst not bring against him a railing accusation, but said, The Lord rebuke thee. 10 But these speak evil of those things which they know not: but what they know naturally, as brute beasts, in those things they corrupt themselves. 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. 12 These are spots in your feasts of charity, when they feast with you, feeding themselves without fear: clouds
they are without water, carried about of winds; trees whose fruit withereth, without fruit, twice dead, plucked up by the roots; 13 Raging waves of the sea, foaming out their own shame; wandering stars, to whom is reserved the blackness of darkness for ever.
14 And Enoch also, the seventh from Adam, prophesied of these, saying, Behold, the Lord cometh with ten thousands of his saints, 15 To execute judgment upon all, and to convince all that are ungodly among them of all their ungodly deeds which they have ungodly committed, and of all their hard
speeches which ungodly sinners have spoken against him. 16 These are murmurers, complainers, walking after their own lusts; and their mouth speaketh great swelling
words, having men's persons in admiration because of advantage.
A Call to Persevere
(Hebrews 10:19-39)
17 But, beloved, remember ye the words which were spoken before of the apostles of our Lord Jesus Christ; 18 How that they told you there should be
mockers in the last time, who should walk after their own ungodly lusts. 19
These be they who separate themselves [or,' setting themselves apart'-ylt], sensual [or, 'natural men'-ylt (i.e. soulish/[merely]of the senses)], having not the Spirit.