By expressing unconditional love, we become more divine. This is one of the most powerful laws of the universe, permeating all spheres and dimensions. However, the further one is from the source, the less it is [often] expressed.
The ultimate expression of unconditional love provides for a feeling of oneness within the universe. What limits us is fear, and the expression of fear is hate and judgment. So the law of unconditional love has to do with the letting go and transcending of fear. As fear and judgment is shed (through forgiveness), we open ourselves to a greater expression of unconditional love.