Surah Fusilat (The Verses Prefectly Explained), Verse 30

اِنَّ الَّذِیْنَ قَالُوْا رَبُّنَا اللّٰهُ ثُمَّ اسْتَقَامُوْا تَتَنَزَّلُ عَلَیْهِمُ الْمَلٰٓىِٕكَةُ اَلَّا تَخَافُوْا وَلَا تَحْزَنُوْا وَاَبْشِرُوْا بِالْجَنَّةِ الَّتِیْ كُنْتُمْ تُوْعَدُوْنَ ۟

Innal lazeena qaaloo Rabbunal laahu summas taqaamoo tatanazzalu 'alaihimul malaaa 'ikatu allaa takhaafoo wa laa tahzanoo wa abshiroo bil Jannnatil latee kuntum too'adoon

“In the case of those who say, "Our Lord is Allah", and, further, stand straight and steadfast, the angels descend on them (from time to time): "Fear ye not!" (they suggest), "Nor grieve! but receive the Glad Tidings of the Garden (of Bliss), the which ye were promised!”

Quran 41:30 (Yusuf Ali Translation)