They Cause Division on Purpose

Jude 1:14-25
"14 It was also about these men that Enoch, in the seventh generation from Adam, prophesied, saying, “Behold, the Lord came with many thousands of His holy ones,
15 to execute judgment upon all, and to convict all the ungodly of all their ungodly deeds which they have done in an ungodly way, and of all the harsh things which ungodly sinners have spoken against Him.”
16 These are grumblers, finding fault, following after their own lusts; they speak arrogantly, flattering people for the sake of gaining an advantage.

Keep Yourselves in the Love of God
17 But you, beloved, ought to remember the words that were spoken beforehand by the apostles of our Lord Jesus Christ, 18 that they were saying to you, “In the last time there will be mockers, following after their own ungodly lusts.”
19 These are the ones who cause divisions, worldly-minded, devoid of the Spirit.
20 But you, beloved, building yourselves up on your most holy faith, praying in the Holy Spirit,
21 keep yourselves in the love of God, waiting anxiously for the mercy of our Lord Jesus Christ to eternal life.
22 And have mercy on some, who are doubting;
23 save others, snatching them out of the fire; and on some have mercy with fear, hating even the garment polluted by the flesh.
24 Now to Him who is able to keep you from stumbling, and to make you stand in the presence of His glory blameless with great joy,
25 to the only God our Savior, through Jesus Christ our Lord, be glory, majesty, dominion and authority, before all time and now and forever. Amen."