John Wesley on Nehemiah 8:15

Mount - The mount of Olives, which was next Jerusalem, and stored with olive - branches, and probably with the rest: for these trees seem to have been planted hereabouts principally, for the use of the city in this very feast, which, though, long neglected, should have been celebrated every year. And this place seems to be here designed as the most eminent place, being put for any place near to the several cities of Judah, where these branches were to be procured.