Römer 16:17

Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned--"which ye learned." and avoid them--The fomentors of "divisions" here referred to are probably those who were unfriendly to the truths taught in this epistle, while those who caused "offenses" were probably those referred to in Rom 14:15 as haughtily disregarding the prejudices of the weak. The direction as to both is, first, to "mark" such, lest the evil should be done ere it was fully discovered; and next, to "avoid" them (compare Th2 3:6, Th2 3:14), so as neither to bear any responsibility for their procedure, nor seem to give them the least countenance.

The apostle having endeavoured by his endearing salutations to unite them together, it was not improper to subjoin a caution to take heed of those whose principles and practices were destructive to Christian love. And we may observe, I. The caution itself, which is given in the most obliging manner that could be: I beseech you, brethren. He does not will and command, as one that lorded it over God's heritage, but for love's sake beseeches. How earnest, how endearing, are Paul's exhortations! He teaches them, 1. To see their danger: Mark those who cause divisions and offences. Our Master had himself foretold that divisions and offences would come, but had entailed a woe on those by whom they come (Mat 18:7), and against such we are here cautioned. Those who burden the church with dividing and offending impositions, who uphold and enforce those impositions, who introduce and propagate dividing and offending notions, which are erroneous or justly suspected, who out of pride, ambition, affectation of novelty, or the like, causelessly separate from their brethren, and by perverse disputes, censures, and evil surmisings, alienate the affections of Christians one from another - these cause divisions and offences, contrary to, or different from (for that also is implied, it is para tēn didachēn), the doctrine which we have learned. Whatever varies from the form of sound doctrine which we have in the scriptures opens a door to divisions and offences. If truth be once deserted, unity and peace will not last long. Now, mark those that thus cause divisions, skopein. Observe them, the method they take, the end they drive at. There is need of a piercing watchful eye to discern the danger we are in from such people; for commonly the pretences are plausible, when the projects are ver…

16:17 people who cause divisions: Paul had trouble with divisive false teachers elsewhere (see Galatians, Colossians, 1 Timothy), so he warned the Roman church about this danger.