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The inscriptions at Serabit el-Khadim were first systematically documented during Sir William Matthew Flinders Petrie's 1905 expedition to the turquoise mines on the Sinai Peninsula. Additional epigraphic work was conducted by Alan Gardiner and T. Eric Peet in 1916 and further expanded by Harvard Semitic Museum expeditions in the 1930s under the direction of W. F. Albright. The inscribed objects—primarily sphinx statuettes, stelae, and rock surfaces—date broadly to the Middle and early Late Bronze Age, approximately 1850–1400 BC. Specimens are distributed among the Egyptian Museum in Cairo, the British Museum in London, and the Ashmolean Museum in Oxford. The corpus comprises roughly forty inscribed objects bearing short texts in an acrophonic alphabetic script of approximately twenty-seven to thirty signs, each sign derived from a simplified Egyptian hieroglyphic form but assigned a Semitic phonetic value based on the first sound of the corresponding Semitic word. Dimensions vary widely: the most studied object, a small sphinx (British Museum EA 41748), measures approximately 15 cm in length. Alan Gardiner's 1916 analysis identified a recurrent sequence tentatively read as "l-b-ʿ-l-t," interpreted as a reference to Baʿalat, a Semitic goddess venerated at the site alongside the Egyptian Hathor. The inscriptions were produced by Semitic-speaking miners, likely of Canaanite or broader Northwest Semitic background, employed in Egyptian state-run turquoise extraction operations. For biblical studies, the Proto-Sinaitic inscriptions illuminate the linguistic and scribal environment of the Sinai Peninsula during the period associated with Israelite ancestral traditions and the Exodus narrative. They confirm that alphabetic literacy was accessible to non-elite Semitic workers in this region centuries before the emergence of the Phoenician script, providing a plausible technological context for early Israelite and Canaanite writing. The inscriptions situate the development of the Northwest Semitic alphabetic tradition—the direct ancestor of the Paleo-Hebrew and Aramaic scripts used in the Hebrew Bible—within a concrete archaeological and geographical setting. **Sources:** Alan H. Gardiner, "The Egyptian Origin of the Semitic Alphabet," *Journal of Egyptian Archaeology* 3 (1916), 1–16; W. F. Albright, *The Proto-Sinaitic Inscriptions and Their Decipherment* (Harvard University Press, 1966); Benjamin Sass, *The Genesis of the Alphabet and Its Development in the Second Millennium BC* (Harrassowitz, 1988); Exodus 2:15; Exodus 3:1.
The Proto-Sinaitic inscriptions represent the earliest attested alphabetic script, providing direct evidence that Semitic-speaking laborers in the Sinai Peninsula developed the alphabetic writing system ancestral to Phoenician, Aramaic, and ultimately Hebrew—the language of the Hebrew Bible.