However, figures such as Philo of Alexander and Josephus, both writing in the 1st century CE, mention the Jewish custom of fasting on Yom Kippur, indicating that it was an accepted custom by their time.

Source: https://www.timesofisrael.com/first-recorded-evidence-of-yom-kippur-depicts-day-of-affliction-as-sectarian-struggle/

It tells the story of art dealer Bernard Bottle - played by Alan Cumming - and his discovery of genie Josephus in an old bottle.

Source: https://www.dailymail.co.uk/news/article-12202149/How-Richard-Curtis-Bernard-character-films-unsubtle-dig-Sir-Bernard-Jenkin.html?ns_mchannel=rss&ns_campaign=1490&ito=1490