The ray of integration. It is a transition ray between the seven rays, which are for the mastery in the planes of matter of the Christ consciousness, and the five secret rays, which are within the white-fire core of being. The five secret rays represent a going within for the mastery of God, whereas the seven outer rays represent the coming without and the mastery of the environment. These cycles are a pattern of the going within and the coming out—the Eastern teachings, going within; the Western teachings, going without.
In this period of the turning of cycles that we are experiencing in the West, it is time for us to go within to the white-fire core of being. This transition of going within is accomplished through the eighth ray, whose symbol is the figure eight. The eighth ray corresponds to the secret chamber of the heart.
Archangel Uzziel is the archangel of the eighth ray.
Elizabeth Clare Prophet, Inner Perspectives, ch. 22.