This is meant to evoke the Rosicrucians, a real-world mystery order like the Bavarian Illuminati or the Hermetic Order of the Golden Dawn. Their "secret history" supposedly traces them back to the secret lore of ancient Egypt (which fits in with the Egyptian theme of the Setians), but also into various mid-Asian mountain ranges like in Tibet, where their Ascended Masters went into hiding -- corresponding to the hiding places of the "ten thousand" Setians and their leaders. In other words, the Rosicrucians (also known as the "Order of the Rose and the Cross") are the Setians' tool for manipulating humanity from the shadows, especially given that the Setians have established human religions to fracture humanity and the Rosicrucians portray themselves as a Christian mystery order (hence the "...and the Cross").
This is meant to evoke the Rosicrucians, a real-world mystery order like the Bavarian Illuminati or the Hermetic Order of the Golden Dawn. Their "secret history" supposedly traces them back to the secret lore of ancient Egypt (which fits in with the Egyptian theme of the Setians), but also into various mid-Asian mountain ranges like in Tibet, where their Ascended Masters went into hiding -- corresponding to the hiding places of the "ten thousand" Setians and their leaders. In other words, the Rosicrucians (also known as the "Order of the Rose and the Cross") are the Setians' tool for manipulating humanity from the shadows, especially given that the Setians have established human religions to fracture humanity and the Rosicrucians portray themselves as a Christian mystery order (hence the "...and the Cross").