وَهُوَ كَلَامُ اللَّهِ تَعَالَى لَا يُسَاوِيهِ شَيْءٌ مِنْ كَلَامِ الْمَخْلُوقِينَ
It is Allah's speech; no speech of created beings equals it.
Human speech depends on bodily organs, audible sounds, letters, time and other created means. Allah's speech is His attribute and is not dependent on these creaturely necessities.
Divine speech cannot be judged as though it were simply another form of human discourse.