The mystery of the incarnation--of how the divine becomes flesh, the spirit body, the metaphysical physical--is, of course, of great interest to Barfield.

If we "dwell on the full meaning of the word incarnation," the Meggid explains in Unancestral Voice, we will understand that "it does not refer only to human flesh, or even only to flesh. It refers to the whole world of nature, in so far as it is perceived through the senses; and it was to this world of the senses that Gabriel directed the earnest gaze of mankind" (40).

According to the Anthroposophical concept of the descent of the potency, there is no reason to believe that reincarnation of the human spirit takes place all at once. It is, rather, the product of the evolution of consciousness, as Burgeon comes to understand in Unancestral Voice:

He saw quite clearly that mysterious potency on its way down from the head to the lower organism. He saw it reach the heart and the blood and from there begin to manifest itself in a new way, a way in which the Greek world has as yet no experience-and of which [D. H.] Lawrence and most of the twentieth century no longer had any experience. He saw it radiating outward from within, as it once rayed formatively inward from without--then, when it was hardly yet aware of itself as physical. He saw the beginning of that awareness taking shape already in the Middle Ages. (29)

And in "The Philosophy of Samuel Taylor Coleridge," Barfield offers a brief glimpse of what incarnation's final stage might imply:
    Thus at the final stage of the process of evolution and bringing it full circle, we wake to see the whole as an expression of the original polarity. We see realized as fact that polarity which, as dialectic, was found to constitute the nature of grammar and logic--the I AM in the act of reproducing itself. That which I AM has so long and laboriously created itself affirms "I am." The Son of God awakens on earth and, awakened, names himself the Son of Man. (RCA 161)
See in particular, Romanticism Comes of Age, passim, Unancestral Voice, passim.