Scientists rewrite Dead Sea timeline

The Dead Sea Scrolls are the oldest big cache of Jewish manuscripts from around the turn of the era, and scholars use them to track how biblical books and related traditions developed. The problem is that most individual scrolls never had a firm birth certificate. People dated them mostly by handwriting style. Now a team led by Mladen Popović at the University of Groningen says that old timeline needs real revision. In a PLOS One paper published June 4, 2025, the group combined radiocarbon dates, handwriting analysis, and an A.I. model called Enoch to push many manuscripts earlier than the standard chronology allowed. ### Why was the old dating system shaky? Paleography — basically, dating a text by the look of its script — has always been useful, but for the Dead Sea Scrolls it had a built-in weakness. There are very few securely dated Hebrew and Aramaic manuscripts from the right centuries to compare against, so scholars were often anchoring one uncertain script to another uncertain script. The Groningen team’s point is not that paleographers were careless. It’s that the reference ladder itself had missing rungs. (pure.rug.nl) ### What did the researchers actually do? They started with 24 scroll samples that had radiocarbon dates. Those dates gave the team hard time markers. Then they used image analysis of the ink traces and letter shapes to train Enoch to connect handwriting features with likely dates. After that, they ran the model on 135 manuscripts that did not already have secure dates. In cross-checking, the model’s typical uncertainty was about plus or minus 30 years. (rug.nl) ### Why is that a big deal? Because 30 years is tight enough to change historical arguments, not just tidy them up. If a manuscript moves a century earlier, it can land in a different political world, a different scribal generation, and a different phase of Jewish thought. For the Dead Sea Scrolls, that matters a lot — these texts sit right in the period before rabbinic Judaism and Christianity took shape. (rug.nl) ### Which scrolls moved? The headline claim is that many manuscripts came out older than scholars had thought. The study also says two biblical fragments landed surprisingly early — one from Ecclesiastes and one from Daniel. The researchers argue those copies may come from the lifetimes of the books’ presumed authors or very near them, which is the kind of sentence that instantly gets historians’ attention. (rug.nl) ### What changed about the writing styles? A lot of older scholarship treated major script styles like neat relay runners — one hands off to the next. But Enoch’s dates suggest the Hasmonean and Herodian styles overlapped for longer than assumed. That means scribal culture may have been messier and more simultaneous than the clean textbook sequence implied. Basically, the handwriting timeline may have been too tidy because scholars were forcing scattered evidence into a straight line. (rug.nl) ### Does this settle the argument? Not completely. Radiocarbon dating on fragile manuscripts is hard because sampling can damage material, and old conservation treatments can complicate measurements. The model is also only as good as the dated samples used to train it. Even so, this is stronger than a vibes-based rewrite of handwriting history. It ties paleography to physical dating and makes the assumptions testable. (smithsonianmag.com) ### So what’s the real takeaway? The news is not just “A.I. read old scrolls.” It’s that a core scholarly clock for one of the most important text collections in history may have been running late. If more experts accept these earlier dates, the map of when biblical and other Jewish texts were copied, circulated, and standardized will have to move with them. (pure.rug.nl) (rug.nl)