Rudolf Steiner, March 19, 1924:"The people of past times said the divine principle came to revelation in three ways. 'You see,' they might have said, 'there is a god of nature, a god of will, and a god of spirit, where the will is hallowed again and made spiritual.' They actually did say this, for the old words meant just that. 'Father' was something connected with the origins of the physical world, a natural principle. In the languages we have now, the significance of these words has been lost. But those people of old would add something when they said there is a god of nature, the Father, a god of will, the Son, and a god of spirit, the Holy Ghost who heals all that has grown sick because of the will. They would add: 'These three are one.' Their most important statement, their greatest conviction, therefore was this: 'The divine has three forms, but these three are one.'
Something else they would say was: 'If you look at a human being, you see a big difference from the natural world. If you look at a stone, what is active in it? The Father. If you look at a plant, what is active in it? The Father God. If you look at the human being as a physical human being, what is active in it? The Father God. However, if you look at the human being as soul, in his will, what is active in this? The Son God. And if you consider the future of humanity, how it shall be one day when all shall be healthy again in the will--that is where the Spirit God is at work.' All three gods, they would say, are active in the human being. There are three gods or divine forms; but they are one, and they also work as one in the human being.
That was the original Christians' belief."