There is a difference between vigorously debating the scriptures and exhorting one another in love towards evermore perfect doctrine, and dividing along doctrinal lines in pride. If you do not know the difference, run immediately to the cross of Christ and throw yourself upon it and His mercy, that God may transform you by the renewing of your mind. Do not flatter yourself, but rather humble yourself. Let God prune you, that you may produce fruit in keeping with the branches that are in the Vine.
17I appeal to you, brothers, to watch out for those who cause divisions and create obstacles contrary to the doctrine that you have been taught; avoid them. 18For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naive.
1Remind them to be submissive to rulers and authorities, to be obedient, to be ready for every good work, 2 to speak evil of no one, to avoid quarreling, to be gentle, and to show perfect courtesy toward all people. 3For we ourselves were once foolish, disobedient, led astray, slaves to various passions and pleasures, passing our days in malice and envy, hated by others and hating one another.4But when the goodness and loving kindness of God our Savior appeared, 5he saved us, not because of works done by us in righteousness, but according to his own mercy, by the washing of regeneration and renewal of the Holy Spirit, 6whom he poured out on us richly through Jesus Christ our Savior, 7so that being justified by his grace we might become heirs according to the hope of eternal life. 8The saying is trustworthy, and I want you to insist on these things, so that those who have believed in God may be careful to devote themselves to good works. These things are excellent and profitable for people. 9But avoid foolish controversies, genealogies, dissensions, and quarrels about the law, for they are unprofitable and worthless. 10As for a person who stirs up division, after warning him once and then twice, have nothing more to do with him, 11knowing that such a person is warped and sinful; he is self-condemned.
17But you must remember, beloved, the predictions of the apostles of our Lord Jesus Christ. 18They said to you, "In the last time there will be scoffers, following their own ungodly passions." 19It is these who cause divisions, worldly people, devoid of the Spirit. 20But you, beloved, building yourselves up in your most holy faith and praying in the Holy Spirit,21 keep yourselves in the love of God, waiting for the mercy of our Lord Jesus Christ that leads to eternal life. 22And have mercy on those who doubt; 23save others by snatching them out of the fire; to others show mercy with fear, hating even the garment stained by the flesh.
And to the rest of us in Christ and to those who would heed the warnings above and turn to Christ in the future if not in him now, Jude concludes:
24 Now to him who is able to keep you from stumbling and to present you blameless before the presence of his glory with great joy, 25to the only God, our Savior, through Jesus Christ our Lord, be glory, majesty, dominion, and authority, before all time and now and forever. Amen.
God is God... Get used to it.