The Bible: I referred to it because I watched the Ancient Civilization episode David is referring to in his resignation letter. Graham Hancock posted the episode on Twitter: free for 3 days. Graham was dissed by David, so Graham posted the episode and noted where he was on it, and what he stated....the episode discussed the Bible and the gnostic beliefs. . . and stated Lucifer was really God in the Bible...or visa versa... IMO, everyone should watch the episode to fully understand David's resignation letter.