The last verse (77): سُنَّةَ مَن قَدْ أَرْ‌سَلْنَا (Such has been Our way with the messengers We sent ...) tells us that, according to the customary way and law of Allah Ta` ala, when a people expel their prophet from his home-land, or compel him to leave by scaring and harassing, then, those people too are not left to continue living there. They are visited by the punishment of Allah Ta’ ala.