Sanpokojin was considered to be the same as Kenbaya, which was a deity of earthquakes, kenzoku (disciples or followers of Buddha) of Nitten, as preached in Vol. 5 of Dainichikyo-sho under the syncretism of Shinto and Buddhism.
三宝荒神は、神仏習合のもとで大日経疏巻五に説かれる日天の眷属である地震を司る神である剣婆（けんばや）と同一視された。