For Augustine the neighbor is defined relationally so that compassion extends even to enemies

Evidence

So it is clear that we should understand by our neighbor the person to whom an act of compassion is due if he needs it or would be due if he needed it. It follows from this that a person from whom an act of compassion is due to us in our turn is also our neighbor. For the word “neighbor” implies a relationship: one can only be a neighbor to a neighbor. Who can fail to see that there is no exception to this, nobody to whom compassion is not due? The commandment extends even to our enemies, ad inimicos . .. it is clear that all people must be reckoned as neighbors, because evil must not be done to anyone. — Gil Anidjar, The Jew, the Arab, 170

Categorization

• DEFINE: Defines ‘neighbor’ as inherently relational, which is the hinge that lets the enemy count as neighbor.