"The pre-Adamite hypothesis or pre-Adamism is the theological belief that humans (or intelligent yet non-human creatures) existed before the biblical character Adam. Pre-Adamism is therefore distinct from the conventional Abrahamic belief that Adam was the first human."
https://christianpublishinghouse.co/2021/02/04/the-false-doctrine-of-pre-adamites-was-there-other-humans-and-death-before-adam-and-eve/
"There are groups from all belief systems — Christians, conspiracy theorists, alien researchers, evolutionists, and more — who believe pre-Adamites (humans or intelligent beings that walked the Earth before Adam) actually existed."
https://www.gaia.com/article/pre-adamites-did-humans-inhabit-earth-before-adam-and-eve
"the Serpent itself is intelligent and crafty"
https://www.bitterwaters.com/bw_12_21_2018/the-case-for-lilith/the-biblical-case-for-lilith/3-12-the-serpents-extreme-intelligence-and-ability-to-speak/
"Q—Did you ever discover where Cain got his wife?"
"Q—The Bible says he got one doesn’t it? Were there other people on the earth at that time?"
"Q—There were no others recorded, but Cain got a wife."
"Q—Where she came from you do not know."
https://answersingenesis.org/bible-characters/cain/cains-wife-who-was-she/
What Does ‘Replenish the Earth’ Mean?
https://answersingenesis.org/bible-questions/what-does-replenish-the-earth-mean/
"the “pre-Adamite” people who ruled this earth for 100,000’s of years (you already have their kings list) going to war over a disagreement to make a superior life form to them. 2/3 agreed to it but 1/3 objected. The 1/3 waged war against the rest and this war almost completely destroyed the earth."
https://www.ancient-code.com/pre-adamites-did-ancient-civilizations-develop-on-earth-before-written-history/
"At once the rest of the powers became jealous. Although Adam had come into being through all of them, and they had given their power to this human, Adam was more intelligent than the creators and the first ruler. When they realized that Adam was enlightened, and could think more clearly than they, and was stripped of evil, they took and threw Adam into the lowest part of the whole material realm."
http://www.gnosis.org/naghamm/apocjn-meyer.html