We recall that Jesus’ teachings were rooted in Mosaic Law and the prophets.  Yet he emphasized or combined aspects of each that made them seem to come alive, or to be read and understood in a new way.  It’s certainly true that loving God and loving one’s neighbor were commandments in Mosaic Law.  But who had ever combined them like this before?  All of our actions ought to flow from this twofold love.  Loving God and loving neighbor go together, and they cannot be reduced one to the other or one over the other.