In 1960, Israeli archaeologist Joseph Naveh discov..

3 yrs

In 1960, Israeli archaeologist Joseph Naveh discovered the Mesad Hashavyahu Ostracon.

This 2,600-year-old pottery fragment contains the first known extra-biblical reference to the Jewish Sabbath.
https://watchjerusalem.co.il/6....29-mesad-hashavyahu-

watchjerusalem.co.il

Mesad Hashavyahu Ostracon: A Case of Biblical Law - Watch Jerusalem

And the first extra-biblical evidence of the Sabbath, perhaps even Shavuot