Tafsir of Al-Furqan 25:36

And indeed We gave Musa the Scripture, and placed his brother Harun with him as a helper; And We said: "Go you both to the people who have denied Our Ayat.'' Then We destroyed them with utter destruction. Allah threatens the idolators who denied and opposed His Messenger Muhammad and He warns them of the punishment and painful torment He sent upon the previous nations who rejected their Messengers. Allah begins by mentioning Musa, upon him be peace, whom He sent along with his brother Harun as a helper -- i.e., as another Prophet who helped and supported him -- but Fir`awn and his chiefs denied them both:

دمر الله عليهم وللكفرين أمثلها

Allah destroyed them completely, and similar (awaits) the disbelievers. (47:10) And when the people of Nuh denied him, Allah destroyed them likewise, for whoever denies one Messenger denies all the Messengers, because there is no difference between one Messenger and another. If it had so happened that Allah had sent all His Messengers to them, they would have denied them all. Allah says: