The Scriptures have clear commands to do good for your city (I think we could expand this to other levels like county, state, and country). This is what is encouraged by patriotism. Patriotism is defined as, “the quality of being patriotic; devotion to and vigorous support for one’s country.”
The Scriptures have clear commands to love your enemy. This negates all forms of nationalism. Nationalism is defined as, “identification with one’s own nation and support for its interests, especially to the exclusion or detriment of the interests of other nations.”