Watch: Secret Mysteries of the Ancient Goddess by Robert Sepehr
From Robert Sepehr at Atlantean Gardens:
Before Christianity existed, there was what is now commonly known as Paganism, which is also called Polytheism, the belief or worship of more than one God. Tritheism is a word that comes from the Greek, meaning ‘Three Divinity’, and in antiquity, as well as in certain forms of Neopaganism, the Triple Goddess is a deity or archetype viewed as a triunity of three distinct aspects or figures united in one being.
Various triune or triple goddesses were commonly seen in ancient, or pre-Christian, religion. The details of the rites, ceremonies, and beliefs were kept secret due to persecution, and consistently preserved from antiquity. As their core teaching became unacceptable, the Goddess teachings became the “Mysteries”.