The 1,500-year-old tablet, being auctioned by Sotheby’s, is expected to net between $1 million and $2 million in a single-lot sale this afternoon.

It dates to the late Roman-Byzantine era and is said to be the only complete tablet of the Ten Commandments still extant from this early era.

While the text is said to “closely follow the Biblical verses familiar to both Christian and Jewish traditions”, it contains a key difference, omitting “Thou shalt not take the name of the Lord in vain”.

The tablet instead includes a different commandment instructing followers to worship on Mount Gerizim, a holy site specific to the Samaritans.

“An extraordinary treasure from antiquity, inscribed with the moral code that underpins Western civilization, this stone tablet is a bridge between faiths, regions, and eras,” Sotheby’s said.