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
Patriarchs (Bible) can be used to refer to the twenty male ancestor-figures between Adam and Abraham. The first ten of these are called the Antediluvian patriarchs, because they came before the Flood. Judaism, Christianity and Islam hold that the patriarchs, along with their primary wives, known as the matriarchs – Sarah (wife of Abraham), Rebekah (wife of Isaac) and Leah (one of the wives of Jacob) – are entombed at the Cave of Machpelah in Hebron, a site held holy by the three religions. Only Rachel, Jacob's favorite wife, is said to be buried separately at what is known as Rachel's Tomb,