David Icke's book Children of the Matrix was published in 2001.
Chapter 11 is entitled "God Save Us from Religion."
The information given is mind boggling.
Some quotes:
. . . Every major religion, Judaism, Christianity, Hinduism, Islam, and Buddhism all had the same basic origin: the knowledge and beliefs of Sumer, which inherited the knowledge and beliefs of Atlantis and Lemuria. . .
The big "C" is a big lie
Christianity was just an "add-on" to the texts and laws decided by the Levites and their successors during and after the Babylon "captivity". So what is Christianity and where did it come from? If you are a Christian, I should sit down and strap in. Christianity is largely a Sun religion and "Jesus" is not the "son", but the Sun. . .
https://archive.org/details/DavidIckeChildrenOfTheMatrix/
The chapter is full of supporting detail gleaned from his sources, which he lists at the end of the chapter.