This file was stored at "/sdcard/DCIM/.thumbnails/1487653696400.jpg"
1487653696400.jpg is an autogenerated thumbnail of a webm/mp4 file I had/have which is of the following video which is titled "Lesson 2 Obey JEHOVAH": https://www.youtube.com/watch?v=D5tB0rW0_rM (found via YouTube > search https://m.youtube.com/results?search_query=lesson+2+obey+jehovah). ImgOps > TinEye reverse image search: no matches. ImgOps > Google reverse image search: nothing. ImgOps > Yandex reverse image search:
(2) Matches of this video, but translated into non-English languages: