By A Gardnerian
The popular misconception that there is a Wiccan Rule or Law of Three or Threefold Return comes from a misinterpretation of a passage in a work of fiction written by Gerald Gardner, the grandfather of modern Wicca. The book was called High Magic’s Aid, and he wrote it with the permission of his High Priestess. It had to be fiction because at that point, witchcraft was still illegal in Britain. In that book and its fictional story, the protagonist undergoes a sort of initiation rite in which he is taught “mark well when thou receivest good, so equally art bound to return good threefold.”
This means that when someone does good by a witch, according to the witchcraft teaching in this *very* fictional novel, the witch is bound to return that good threefold. This is a far cry from “anything at all that you send out into the world will return to you threefold.” It actually means that what you do to a witch should be returned by her threefold, and specifically good acts. Which means it’s really, really good for you to bless, help or aid a witch. The idea is that the witch returns things triple, not the universe. The witch is herself the agent of a threefold response, not the universe.