XII. The Stages of Christian Initiation
If you were to rise from the earth to another planet, you would not only see the earth, but also the earth's etheric and astral body; you would see the spiritual earth besides the physical one; and if you could dwell on that planet for thousands of years, if you could have dwelt on it even before the appearance of Christ-Jesus, you would have seen how in the spiritual part of the earth the colour of the astral body underwent a change through the fact that Christ-Jesus was there. The earth really underwent a change, and the men who lived after Christ-Jesus, lived upon a transformed earth. For this reason they can overcome the deepest descent of the spirit. Before that time, it was necessary to be raised to the spiritual worlds if one wished to know something about it; but in Christianity the Mystery Itself has descended to the earth. It was there, as a historical event, visible to physical eyes. The Godhead had to descend in order to lead humanity up once more, from the physical world into the spiritual.