“King; Comes from the root Kin, like kindred. Originally the King was kindred, “my kin,” really – “of my blood.” The final “g” is both phonetic and may also represent the serpent or even the throne of the “Mother,” upon which he, the king sits. Throughout the ancient world the king or pharaoh always received the right of rule from the female goddess. He officiated for Her. The symbols for woman and serpent were often interchangeable in ancient cultures. The Egyptian hierogram for woman was a serpent, for instance.”

Source: Astro-Theology Etymology and Sidereal Mythology Tarot Astronomy