Exegesis of the saying of Allah the Exalted: ((Allah has set a seal upon their hearts and upon their hearing, and over their vision is a veil. And for them is a great punishment.))

Allah the Exalted said: The sealing means stamping, and its origin is from the seal, which is the ring, because when the statement in a writing is finished, the statement is sealed with the writing, meaning that the matter is concluded. So these are the ones upon whose hearts Allah has set a seal. It is also like a container of dates when it is sealed with red wax, as they say that its matter is concluded. Meaning, and He has sealed their hearing. And when the hearts are sealed, they no longer understand, and when the hearing is sealed, it no longer hears in a way that benefits.
He said: This is a new sentence. The veil is a covering, so when there is a veil over the eyes, they no longer see. Thus, the three paths of guidance have been sealed: the heart, secondly, the hearing of what is said, and thirdly, the sight of what is seen. So all three doors have been blocked. Allah the Exalted said: No one.
So if someone were to ask: Does this sealing have a cause, or is it a trial and test from Allah?
The answer is: It has a cause that Allah made clear in His saying: and in His saying: So if you see someone who has gone astray, know that he is the cause of his own misguidance.
And for them, meaning for these disbelievers who remained in their disbelief, there is a great punishment, which is the punishment of the Fire. Allah the Exalted magnified it because there is nothing more severe than the punishment of the Fire. May Allah protect us and you from it by His generosity and His bounty. This concludes the discussion of the second category of creation, namely the pure, open disbelievers.