When asked, "what is the greatest commandment?" it is significant that Jesus answers with more than one commandment (Mt 22:34-40). We need to love God... but... we can't really love God unless we love our neighbour... but... we can't really love our neighbour unless we love ourselves. To love God, then, we need to love others (especially the difficult ones) in a way that shows we actually like them.

30 Sunday of Ordinary time, year A