The god El is mentioned at least three times in the Proto-Sinaitic inscriptions in Serabit (Sinai 377, 378, 363), and once in Wadi el-Hôl. The god El plays a central role in the Book of Judges. See recently André Lemaire, The Birth of Monotheism—The Rise and Disappearance of Yahwism (Washington, DC: Biblical Archaeology Society, 2007), pp. 14–17.