The Iron Age sequence in the southern Levant is one of the most evocative and provocative in ancient history, since it coincides with events remembered in the Hebrew Bible (Old Testament). The authors show how a scientific chronological framework can be created and contribute an independent voice to the historical debate. They also show that, if archaeology is to complement history, such a framework requires an especially rigorous application of precision, in context definition, data handling and Bayesian radiocarbon dating, and urge such application to forthcoming work at the key Biblical site of Megiddo.