Stages of downward penetration of divine nature into a human individuality

This sentence expresses exactly the facts I have explained as the result of occult investigation. Salvation depends on the two becoming one. The two became one when in his twelfth year the individuality of Zarathustra passed over into the Nathan Jesus, and what was inward became external. The soul force of the Jesus of the Gospel of Luke was most powerfully inward, but this inward force became outward when the Zarathustra individuality—whose outward forces had been developed to a high degree in the physical body and etheric body of the Solomon Jesus—entered into this inward nature, permeating it with his highly evolved physical and etheric nature. Thus a power entered the physical and etheric body of the Nathan Jesus, and what was external became an expression of his inwardness—inwardness that was his before the individuality of the Solomon Jesus passed into him. Thus the two became one.