Humans thought the pain we feel was dependant on the brain itself. But modern science discovered that pain receptors exist within the skin which is what causes the pain.
For example, when we are burnt, the doctor/surgeon will carry out a quick and easy test. He will verify whether the pain receptors have been damaged using a pin to prick the area which has been damaged.
If the patient feels pain, the pain receptors are still in working order, but if the patient does not feel pain then the pain receptors have been damaged and the patient will feel no pain around that area.
The Qur’an mentions the recreating of skin in the below verse over 1400 years ago:
We shall soon put those who disbelieve in Our signs into the fire; whenever their skins are cooked (fully burnt) We shall change them for new skins so they may taste the punishment (again and again); indeed Allah is Almighty, Wise. (Qur’an, 4:56)
Other translations of the above verse:
Sahih International: Indeed, those who disbelieve in Our verses – We will drive them into a Fire. Every time their skins are roasted through We will replace them with other skins so they may taste the punishment. Indeed, Allah is ever Exalted in Might and Wise.
Pickthall: Lo! Those who disbelieve Our revelations, We shall expose them to the Fire. As often as their skins are consumed We shall exchange them for fresh skins that they may taste the torment. Lo! Allah is ever Mighty, Wise.
Yusuf Ali: Those who reject our Signs, We shall soon cast into the Fire: as often as their skins are roasted through, We shall change them for fresh skins, that they may taste the penalty: for Allah is Exalted in Power, Wise.
Shakir: (As for) those who disbelieve in Our communications, We shall make them enter fire; so oft as their skins are thoroughly burned, We will change them for other skins, that they may taste the chastisement; surely Allah is Mighty, Wise.
Muhammad Sarwar: We will make the rejectors of Our revelations suffer in hell fire. As soon as the fire destroys their skins, We will give them new skins so that they may suffer more of the torment. God is Majestic and All-wise.
Mohsin Khan: Surely! Those who disbelieved in Our Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) We shall burn them in Fire. As often as their skins are roasted through, We shall change them for other skins that they may taste the punishment. Truly, Allah is Ever Most Powerful, AllWise.
Arberry: Surely those who disbelieve in Our signs — We shall certainly roast them at a Fire; as often as their skins are wholly burned, We shall give them in exchange other skins, that they may taste the chastisement. Surely God is All-mighty, All-wise.
Allah (God) seems to be giving us a sign within the Qur’an revealed over 1400 years ago, that when the pain receptors are destroyed, new skin will be created. Amazing
God knows best