The Holy Quran 25:36 — Surah Al-Furqan
Arabic text
فَقُلْنَا ٱذْهَبَآ إِلَى ٱلْقَوْمِ ٱلَّذِينَ كَذَّبُوا۟ بِـَٔايَـٰتِنَا فَدَمَّرْنَـٰهُمْ تَدْمِيرًا
Translation
We then said, "The two of you should go (and preach Towheed) to the nation that rejects Our Aayaat (Fir'oun's nation)." (So the two brothers preached Towheed to Fir'oun and his people but they rejected the message.) Thereafter We completely annihilated (destroyed) the nation (of Firoun when We drowned them in the Red Sea).
Tafsir (excerpt) — Tafsir Usmani
That is, by rejecting the signs of creation, which point to the oneness of Allah and so on, and the unanimous statements of the earlier prophets, which had been known to a greater or lesser extent from before, they had begun to claim divinity.
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