وَلَقَدْنَعْلَمُأَنَّهُمْيَقُولُونَإِنَّمَايُعَلِّمُهُۥبَشَرٌۭ ۗلِّسَانُٱلَّذِىيُلْحِدُونَإِلَيْهِأَعْجَمِىٌّۭوَهَـٰذَالِسَانٌعَرَبِىٌّۭمُّبِينٌ١٠٣

And We certainly know that they say, "It is only a human being who teaches him [i.e., the Prophet (ﷺ)]." The tongue of the one they refer to is foreign,¹ and this [recitation, i.e., Qur’ān] is [in] a clear Arabic language.

Indeed, those who do not believe in the verses of Allāh - Allāh will not guide them, and for them is a painful punishment.

They only invent falsehood who do not believe in the verses of Allāh, and it is those who are the liars.

Whoever disbelieves in [i.e., denies] Allāh after his belief...¹ except for one who is forced [to renounce his religion] while his heart is secure in faith. But those who [willingly] open their breasts to disbelief, upon them is wrath from Allāh, and for them is a great punishment;

That is because they preferred the worldly life over the Hereafter and that Allāh does not guide the disbelieving people.

Those are the ones over whose hearts and hearing and vision Allāh has sealed, and it is those who are the heedless.

Assuredly, it is they, in the Hereafter, who will be the losers.

Then, indeed your Lord, to those who emigrated after they had been compelled [to say words of disbelief] and thereafter fought [for the cause of Allāh] and were patient - indeed, your Lord, after that, is Forgiving and Merciful