Adam Clarke on Galatians 5:15

If ye bite and devour one another - These Churches seem to have been in a state of great distraction; there were continual altercations among them. They had fallen from the grace of the Gospel; and, as Christ no longer dwelt in their hearts by faith, pride, anger, ill-will, and all unkind and uncharitable tempers, took possession of their souls, and they were in consequence alternately destroying each other. Nothing is so destructive to the peace of man, and to the peace of the soul, as religious disputes; where they prevail, religion in general has little place.