God's love is pure. Our love is something else. When God loves us, we don't mind that he loves all others. And when we love him, we are glad if others also love him. But when we love another one with our love, we tend to possess that person and do not welcome others to love the object of our affection. And it that person loves others, we get jealous. The world will have peace only if we love as God loves because only his love can set us free.