Abrahamic religions "Abrahamic traditions" has been challenged. In 2012, Alan L. Berger, Professor of Judaic Studies at Florida Atlantic University, in his Preface to "Trialogue and Terror: Judaism, Christianity, and Islam after 9/11" wrote that there are "commonalities", but "there are essential differences between the Abrahamic traditions" both "historical and theological". Although "Judaism birthed both Christianity and Islam", the "three monotheistic faiths went their separate ways". The three faiths "understand the role of Abraham" in "differing ways", and the relationships between Judaism and Christianity and between Judaism and Islam are "uneven". Also, the three traditions are "demographically unbalanced and ideologically diverse". Also
Christianity and other religions one of many good teachers". In the 2008 book "Vintage Jesus: Timeless Answers to Timely Questions", authors Mark Driscoll and Gerry Breshears write: "According to Scientology, Jesus is an "implant" forced upon a Thetan about a million years ago", and Jack Huberman writes in "101 People Who Are Really Screwing America" that in Scientology Jesus is seen as having been "implanted in humanity's collective memory", by the character Xenu from Scientology space opera. The spread of Christianity has been international, in some cases entirely displacing the religions and altering the customs encountered among those people to whom it has come.