User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-5110811-20121205222353/@comment-5619706-20121206025457

Eve's origin is really mysterious but her statements in 'And Then There Were None' heavily implies her to be a deity, not necessarily in the same league as the pagans, but it makes her the counterpart of Heaven's God and Hell's Lucifer. She owns all monster souls and acts as Purgatory's matriarch.

Granted, she did not seem to be able to do much, but her ability to unplug Castiel was impressive in its own. She also heavily implies she can take care of Crowley, so there's that too.

Meanwhile, on the topic on pagans--I believe they were made by God himself (adverdently or otherwise). Why else would some pagans like Atropos know God and actually be in his service? I think it just so happened that the other pagans were haughty and proud enough to descend to earth and build religions of thier own (hence Kali claiming that they were there first), thus leading God to send his Son so that his children will know who the real deal is. Even Plutus acknowledges God's status as the most powerful.