People in scripture can quote other scriptures (regularly done in the Book of Mormon), and God can say the same message twice (also regularly done in the Book of Mormon). And yes, it is believed that God can provide the English translation to match.
While looking at scripture and quoting, one also needs remember that the NT books of Matthew, Mark, Luke, and John largely tell the same events. Sometimes these events are in different order, some times the quotes match exactly, sometimes quasi different. And that's totally ok-- different people telling of events. I see no reason to complain about a quote matching exactly or being quasi different.
Scripture / theology / belief should be always approached thoughtfully, with humble prayer.