coeternal

/ˌkoʊɪˈtɜrnəl/
adjective
  1. Existing together eternally; equally everlasting, especially in religious or philosophical contexts.
    • In some theological traditions, the Father and the Son are considered coeternal.
    • Many ancient myths describe gods who are coeternal with the universe itself.
    • The philosopher argued that matter and spirit are coeternal, neither created before the other.
Synonyms
What does "coeternal" mean? | whatsthatwordmean | whatsthatwordmean