Several Jewish sources from late antiquity use the name India for what is patently not the country on the Asian subcontinent we call India today. In the light of Graeco-Roman usage in sources of the same period it becomes clear that the country meant is either Ethiopia or (a part of) Arabia.
See L. H. Feldman, Flavius Josephus, vol. 3: Judean Antiquities 1-4 (Leiden: Brill, 2000), 14-15. For a map showing the interconnectedness of the four rivers of Paradise see Alexander, “Early Jewish Geography,” 979. On the Nile-Ganges-Indus connection in Greco-Roman literature see also Schneider, L’Éthiopie et l’Inde, 35-40.