Biblical Hebrew philology studies the vocabulary and grammar of the Hebrew Bible through systematic comparison with cognate Semitic languages, Arabic, Aramaic and Akkadian among them, rather than relying on the word meanings handed down through rabbinic and patristic translation tradition alone. The German orientalist Wilhelm Gesenius established the modern method with his Hebraisch deutsches Handworterbuch, first published in 1810, which for the first time built Hebrew word definitions systematically from comparative Semitic evidence, correcting a number of traditional renderings that had gone essentially unquestioned since antiquity.
Every translation of the Hebrew Bible rests on a prior philological judgment about what a specific Hebrew word actually meant, and disputed or difficult verses, ones bearing on cosmology, ritual law or a divine name, are frequently disputed precisely because the philological evidence is genuinely ambiguous rather than because translators disagree about theology. The atlas relies on Biblical Hebrew philology wherever a scriptural claim turns on the precise meaning of a Hebrew term, distinguishing a well established philological reading from one resting on a single tradition's inherited translation.