قُلۡ لَّوۡ كَانَ فِي الۡاَرۡضِ مَلٰٓئِكَةٌ يَّمۡشُوۡنَ مُطۡمَئِنِّيۡنَ لَنَزَّلۡنَا عَلَيۡهِمۡ مِّنَ السَّمَآءِ مَلَكًا رَّسُوۡلًا

Say, "If there were upon the earth angels walking securely, We would have sent down to them from the heaven an angel [as a] messenger