Baphomet was the God of the Templars, they worshiped him like Satan. The Templars are thought to be one of the earliest sects of demon worshipers.
Although Knights of Templar worshiped the sacred feminine and followed Christ's teachings. They cherished the balance between male and female, black and white, the western equivalent to yin and yang though the Catholic Church has been trying to brand them as demon worshippers. The above definition is likely to have come from that Anti-Templar movement.