It instills a sense of peace ( Sakinah ) because the believer realizes that the One who controls the heavens and the earth—without fatigue or sleep—is the same One looking after them. It is a declaration that the universe is not chaotic, but under the perfect control and knowledge of the Almighty.
Neither drowsiness overtakes Him nor sleep. To Him belongs whatever is in the heavens and whatever is on the earth. Who is it that can intercede with Him except by His permission? He knows what is before them and what will be after them, and they encompass not a thing of His knowledge except for what He wills. His Kursi (Throne/Footstool) extends over the heavens and the earth, and their preservation tires Him not. And He is the Most High, the Most Great." ayatul kursi with transliteration
Ayatul Kursi holds a special place in the heart of a Muslim. Numerous Hadiths (sayings of the Prophet Muhammad ﷺ) highlight its immense rewards. It instills a sense of peace ( Sakinah
Regular morning and evening recitation provides continuous protection. To Him belongs whatever is in the heavens
It is included in the morning ( Sabah ) and evening ( Masaa ) supplications for protection and sustenance throughout the day and night.