Our command (the order and the execution) is one; like a glance of the eye (everything transpires in a ‘single instance’ in the sight of Allah)!
Al-muntakhab fi tafsir al-Qur'an al-Karim
Thus, Our command to bring into being anything, spiritual animate or inanimate, or to bring into effect any proceedings is but a single act executed instantaneously, like the twinkle of an eye