Sariel, according to the Book of Enoch, was one of the leaders of angels who lusted after the daughters of men. They descended to the summit of Mount Hermon, in the days of Jared, to acquire wives and lead men astray. Sariel specifically taught men about the course of the moon. Knibbs' translation of the names of the Book of Enoch says it was Sariel who taught humans the "course of the moon" (the Lunar Calendar). His name is also listed as Arazyal and Asaradel in some 1 Enoch translations, the name being a combination of sa'ar and 'God.'