For centuries it was thought that the frontal part of the human brain handled vision (simply because it is near the eyes).
Today we know that this is false. The part that handles vision turned out to be at the rear of the brain. The front part of the brain is called the prefrontal cortex and is responsible for concocting lies.
Pathological liars have more prefrontal white matter:
Localisation of increased prefrontal white matter in pathological liars"Liars showed a relatively widespread increase in white matter (23-36%) in orbitofrontal, middle and inferior, but not superior, frontal gyri compared with antisocial and normal controls. This white matter increase may predispose some individuals to pathological lying."
Pathological liars have more white matter at the prefrontal cortex. But 1400 years before it was discovered the Quran said that disbelievers will be dragged from their lying forehead.
"A lying sinful forehead" today we know that this is correct.
How could an illiterate man who lived 1400 years ago have known that the frontal part of the brain handles lies?
(The Christian Bible erroneously claims that there are four legged insects Leviticus 11:20. It also claims that there is an animal that has "flames stream from its mouth; sparks of fire shoot out. Smoke pours from its nostrils as from a boiling pot over burning reeds. Its breath sets coals ablaze, and flames dart from its mouth". Job 41:19-21)
The Quran (Koran, the book of Islam) contains scientific knowledge that could not have been known 1400 years ago. It ranges from basic arithmetics to the most advanced topics in astrophysics. You are invited to go through those miracles and judge for yourself.