A Christmas Thought and the Secret of the Ego
The tree, however—which was now represented in the most varied ways—came by some means into the sequence of generations that were the original generations from which the bodily sheath of the Christ Jesus proceeded. This came about in the following way (as it was presented in certain periods of time): when Adam, the sinful man was buried, this tree again grew out of his grave and was thus removed from Paradise. In this story we see the thought suggested that Adam rests in the grave, the human being who went through sin, the human being who was misguided by Lucifer; he rests in the grave and he unites himself with the body of the earth; but out of his grave the tree grows, the tree that can now grow out of the earth with which Adam's body has been united.
Cite:
GA 157a/1915-12-19/p012 · edition English