Due to lack of knowledge, Arab society, 1400 years ago, had many superstitious beliefs regarding the earth and the sky.
They thought that the earth was flat and that the mountains were supporting the sky above. They thought that there were high mountains at both the ends of the world, working as pillars and those pillars held the sky hanging above. However, all these superstitious beliefs were eliminated with the advent of the Quran. The Quran says:
“God is He who raised up the heavens without any support…..” (Surah ar-rad, 2)
Thereby invalidating the belief that the sky remained suspended above because of the mountains. How did the author of the Quran know about this fact 1400 years ago? Indeed, Quran is the book of Allah, the Creator of the heavens and the earth.