Matthew Poole and continuators on Galatians 5:15

15 But if ye bite, and devour one another , take heed ye be not consumed one of another .

This lets us know, that there were great contentions and divisions amongst the members of this Church, whether (which is probable) occasioned by their differences in and about the Doctrine of Iustification, or upon other accounts we are not told, but upon whatever account they were raised, they were contrary to that serving one another in love, to which the Apostle had exhorted them. Nor did they terminate in a meer dislike of, and displicency to each other, but break out into overt acts, more becoming dogs than christians, and therefore 'tis expressed under the notion of biting and devouring.

The issue of which the Apostle prophesieth, would be a consuming one another; they being actions that had a natural tendency to this end.