Semitic languages
The similarity of the Hebrew, Arabic and Aramaic languages was accepted by Jewish and Islamic scholars since medieval times. The languages were familiar to Western European scholars due to historical contact with neighbouring Near Eastern countries and through Biblical studies, and a comparative analysis of Hebrew, Arabic, and Aramaic was published in Latin in 1538 by Guillaume Postel. Almost two centuries later, Hiob Ludolf described the similarities between these three languages and the Ethiopian Semitic languages. However, neither scholar named this grouping as "Semitic".
Israelian Hebrew
Israelian Hebrew (or IH) is a proposed northern dialect of biblical Hebrew (BH). It is proposed as an explanation for various irregular linguistic features of the Masoretic Text (MT) of the Hebrew Bible. It competes with the alternative explanation that such features are Aramaisms, indicative either of late dates of composition, or of editorial emendations. Although IH is not a new proposal, it only started gaining ground as a challenge to older arguments to late dates for some biblical texts since about a decade before the turn of the 21st century: linguistic variation in the Hebrew Bible might be "better" explained by synchronic rather than diachronic linguistics, meaning various biblical texts could be significantly older than many 20th century scholars supposed.