The figure of Abraham, known primarilly from the book of Genesis, is often described as the common father of Jews and Christians and thus the founder of a "Judeo-Christian tradition." Judaism and Christianity have, however, often interpreted the Abrahamic narratives of Genesis in ways that are different and sometimes diametrically opposed. To complicate the picture even more, some currents in both traditions sound themes that are actually more characteristic of the other one, and thus should warn both communities against oversimolifying their own heritage—and that of the other community as well.