You're right about some things but wrong about others.
The simplest way to summarize what I'm about to write here is to realize the symbolic significance of the Star of David, and of the Swastika (and I don't just mean in the context of Nazism, but as an ancient symbol found all over the world, tied to Indo-Europeans/Aryanism, to Persia, Mithraism etc).
The Star of David is ultimately about the dualism of the male and the female, solar and lunar, Apollonian and Dionysian etc.
The upright triangle represents both the shape of the male genitalia, and is the alchemical symbol for fire.
The downwards triangle represents both shape of the female pubis and the ovaries, and is the alchemical symbol for water.
The Swastika represents both Thor swinging his hammer around/the lightning this produces, as well as the cycling of time, or more precisely the cycling of Astrological ages, as you touched on with the mention of the Age of Pisces.
The following is all about Mercury/Hermes, Mithras/Arimanius, Taurus, Aries, and the Gnostic Demiurge
Mercury/Hermes is the Roman/Greek god of financial gain, commerce, eloquence, messages, communication (including divination), travelers, boundaries, luck, trickery and thieves; he also serves as the guide of souls to the underworld. Hermes is also a god of shepherds.
The rabbis of the Talmud discussed Mercury more than any other pagan deity and apparently considered him almost synonymous with idolatry. Verses addressing his worship in the Mishnah closely follow verses mentioning the worship of Ba'al and Moloch. As Mecury was (semi)secretly worshiped, he was mostly depicted not by a statue, but by a "pile of three stones" - presumably either in the shape of a triangle or as a 'trilithon'. Trilithon are commonly associated with Stonehenge and related structures, but can also be seen at the Temple of Jupiter in Baalbek, and at Mnajdra, the temple of solar worship in Malta.
Mercury is also syncretically related to Odin. Both are depicted carrying a staff (in Mercury's case, the 'caduceus', a winged staff entwined by two snakes, a symbol nowadays associated with medicine) and wearing a wide-brimmed hat, and both are travelers or wanderers. However, these relations go beyond superficial similarities; both gods are connected to the dead (Mercury as 'psychopomp' - the only god allowed in both Olympus and the underworld - and Odin as lord of the dead in Valhalla), both were connected to eloquent speech, and both were associated with secret knowledge. Keep in mind, Odin also famously gave away ONE of his EYEs in return for wisdom.
Alchemists also referred to the concept of the 'aether' - which only until the late 19th century was an element believed to permeate all throughout space, providing a medium through which light could travel in a vacuum - as 'universal mercury'. The alchemical symbol for Mercury is similar to that of the symbol for Venus (goddess of sex, fertility and prosperity, also related to the Mesopotamian/Babylonian goddess Inanna/Ishtar), also used as the gender symbol for women.
Except the symbol for Mercury also has 'horns'.
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