Joy is not a feeling in us. Joy does not enter into us. We enter into joy: "Enter into the joy of your Lord" (Mt 25:21).
Peter KreeftScripture starts with the particular and then universalizes it. You are called to love your concrete individual neighbor and then to realize that every individual is your neighbor. The point is not to destroy concrete neighborhood in a fit of universalism but to expand the local neighborhood and embrace the universal neighborhood.
Peter Kreeft