In many neo-pagan/wiccan traditions, Mother Earth is seen as the Goddess, with the Horned God as her consort (and sometimes son). The idea of the Earth as a deity was and is also prominent in many classical paganreligions.
... meaning "but I am not...".
"teshv-" (in/at/by them) at the end of the second line is in locative
plural. Translated: "...in them".
History
Sanskrit is the ...