This is a very important message to all. Truly if the devil always causes us to fight one another for he knows that a kingdom that is divided against itself cannot stand.
As believers the bible warns us against the devil who is seeking devour us:
Be sober, be vigilant; because your adversary the devil, as a roaring lion, walks about, seeking whom he may devour: Whom resist steadfast in the faith, knowing that the same afflictions are accomplished in your brethren that are in the world. 1 Peter 5:8-9
As we become watchful of the enemy we also need to support each other with love and prayer.