Stages of downward penetration of divine nature into a human individuality

The individuality of Zarathustra evolved during boyhood until his twelfth year, within the physical and etheric body of that Jesus of whom the Gospel of Matthew speaks—for as regards this being and on account of the climate, the period, which in our part of the world occurs about the fourteenth or fifteenth year, was reached earlier. By his twelfth year he had attained everything it was possible to attain in the physical and etheric body fittingly prepared within the line of Solomon. The individuality of Zarathustra did then actually forsake the physical and etheric body described in the Gospel of Matthew and passed over into the Jesus of the Gospel of Luke. In the cycle of lectures on the Gospel of Luke the story of the twelve-year-old Jesus in the temple is explained. There we learn what it meant when the child Jesus was suddenly confronted by his parents who could in no way understand how he had become so changed. This change meant that the entrance of the individuality of Zarathustra into his inner being had taken place; until then this Zarathustra-individuality had developed within the physical and etheric sheaths of the Solomon Jesus.