Steiner said: "Zarathustra's I lived in the Nathanic Jesus' body
from its twelfth year onward.. . . We must grasp the wonderous fact
that the Zarathustra-I incarnated into the body of the Nathanic
Jesus in the twelfth year, developing Jesus' soul faculties
infinitely.. . . The Nathanic Jeuss continued to develop under the
influence of Zarathustra's I until a new change occured as he
thirtieth year approached. Once again, as at puberty, a new I fill
the inner being of the Nathanic Jesus, but this time on a more
universally significant level."
This last I was Christ.