The senses receive information, the most important of which is information connected to guidance. Thus, if Allah (swt) takes away the efficacy of the hearing and sight, and places a cover over the hearts, none other than Allah (swt) can bring to human beings this guidance.
(… انظُرْ كَيْفَ نُصَرِّفُ الْآيَاتِ… ) (…Look how we diversify the verses ): We make them clear and vary them from one type to another, so that the matter becomes crystal clear.
( ثُمَّ هُمْ يَصْدِفُونَ … ) (…then they [still] turn away): Meaning, they still deviate from having faith in Allah (swt). From here, we know that it is required that the faith in Allah (swt) must be proven by acts carried out by the limbs, as this is the essence of faith. As such, the Prophet (saws) has said:
“Iman has over seventy branches – or over sixty branches – the uppermost of which is the declaration: ‘Laa ilaha illallah’ (None has the right to be worshipped but Allah); and the least of which is the removal of harmful object from the road.”[1]
This is something that we must be aware of.
[1] Sahih Muslim: The Book of Faith, Chapter of The Branches of Faith, Hadith No. 35.