The ascended masters help us become aware of the Paths back to the Source. Paths that we can walk over to master the seven rays of our Christ consciousness that emerge from the white light. The seven color rays are the natural division of the pure white light emanating from the heart of God as it descends through the prism of manifestation. These are the subdivisions of the wholeness of Christ. Regardless of their color, all of the flames have a white-fire core of purity, which embodies all of the attributes of God and which may be invoked by those who desire to expand the Christ consciousness.
The seven rays present seven paths to individual or personal Christhood. Seven masters have mastered identity by walking these paths, defined as the seven archetypes of Christhood. These particular ascended masters are called the chohans of the rays, which means lords of the rays. Chohan is a Sanskrit term for lord, and lord is equivalent to law; hence the chohan is the action of the law of the ray.
To be a chohan on one of the seven rays means that this master defines the law on that ray; through him that energy of the Christ and of God flows to mankind, to all who are evolving on that particular path.