It is not enough for us to sing, "What the world needs now, is love sweet love." If we stopped here, we could say to our friends and neighbors, "Let's just love each other a little more." That answer, however, is not sufficient.
As human beings we will not love one another until, first of all, we understand that we are loved. Unless we feel ourselves loved, we cannot love. That's a principle not only of theology, psychology, or sociology, but of our Bible as well. Just as abused children grow to abuse their children, loved children grow up to love their children. Loved persons are able to love the world.
Love comes from the heart of God. And there is only one place that we can see God's love completely revealed, and that is on the cross of Jesus Christ. On the cross, the heart of God is displayed for all the world to see. God loved us enough to send his son to die on the cross for you and me.
The kingdom is here. It has to do with love, but it has even more to do with Christ. Jesus gave his life, so that we would have life in the mist of God's unconditional love.