Al-Isra 95

قُل لَّوْ كَانَ فِى ٱلْأَرْضِ مَلَـٰٓئِكَةٌ يَمْشُونَ مُطْمَئِنِّينَ لَنَزَّلْنَا عَلَيْهِم مِّنَ ٱلسَّمَآءِ مَلَكًا رَّسُولًا

qul law kāna fī l-arḍi malāikatun yamshūna muṭ'ma-innīna lanazzalnā ʿalayhim mina l-samāi malakan rasūlan

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."