Siege of Jerusalem
Modern scholars describe this book as pseudepigraphal, as it says it is written by "Rabbi Ishmael" who became a "high priest" after visions of ascension to Heaven. This has been taken as referring to Rabbi Ishmael, a 3rd generation Tanna and a leading figure of Merkabah mysticism. However, this Ishmael lived after the Siege of Jerusalem (70 CE) and the destruction of the Second Temple in 70 CE. He thus could not have been a High Priest of Israel. An alternative identification would be the earlier Tanna Ishmael ben Elisha, who lived through the Siege of Jerusalem.