Direct challenge to false authority and tyranny

وَلَقَدْ أَرْسَلْنَا مُوسَىٰ بِـَٔايَـٰتِنَآ إِلَىٰ فِرْعَوْنَ وَمَلَإِي۟هِۦ فَقَالَ إِنِّى رَسُولُ رَبِّ ٱلْعَـٰلَمِينَ

And certainly did We send Moses with Our signs to Pharaoh and his establishment, and he said, "Indeed, I am the messenger of the Lord of the worlds."