ˈændɹuː ɡˈaʊ stˈʌdid ðɪ ɚɹˈɪdʒɪnəl dʒˈɜːmən lˈæŋɡwɪdʒ tˈɛksts ænd kəŋklˈuːdᵻd ðætðə lˈɛdʒənd ʌvðə ɹˈɛd dʒˈuːz kənflˈeɪɾᵻd θɹˈiː sˈɛpɹət tɹɐdˈɪʃənz: ðə bˈɪblɪkəl pɹɑːfˈɛɾɪk ɹˈɛfɹənsᵻz tə ɡˈɑːɡ ænd mˈæɡɑːɡ, ðə tˈɛn lˈɔst tɹˈaɪbz ʌv ˈɪzɹiːəl, ænd ɐn ˈɛpɪsˌoʊd fɹʌmðɪ ˌælɪɡzˈændɚ ɹoʊmˈæns θˈɜːd sˈɛntʃɚɹi ˌeɪdˈiː, ɪnwˌɪtʃ ˌælɪɡzˈændɚ ðə ɡɹˈeɪt ɛŋklˈoʊzᵻz ɐ ɹˈeɪs ʌv hˈiːðənz bᵻhˌaɪnd ɐ ɡɹˈeɪt wˈɔːl ɪnðə kˈɔːkæsəs.
Andrew Gow studied the original German language texts and concluded that the legend of the Red Jews conflated three separate traditions: the biblical prophetic references to Gog and Magog, the Ten Lost Tribes of Israel, and an episode from the Alexander Romance (3rd century AD), in which Alexander the Great encloses a race of heathens behind a great wall in the Caucasus.