Even 1 Ayat is heavier than the whole earth.
Sahih Bukhari Volume 2, Book 23, Number 441:
Narrated Abu Huraira :
Allah's Apostle said, "Every child is born with a true faith of Islam (i.e. to worship none but Allah Alone) but his parents convert him to Judaism, Christianity or Magainism, as an animal delivers a perfect baby animal. Do you find it mutilated?" Then Abu Huraira recited the holy verses: "The pure Allah's Islamic nature (true faith of Islam) (i.e. worshiping none but Allah) with which He has created human beings. No change let there be in the religion of Allah (i.e. joining none in worship with Allah). That is the straight religion (Islam) but most of men know, not."
(Quran 30.30)
Hadhrat Abu Saeed Khudri (R.A.) narrates that Rasulullah (Sallallahu Alayhi Wasallam) said:
"On the day of Qiyamah Allah will say to Adam (A.S.) to pick out the Jahannamis from his entire progeny. Adam (A.S.) will ask: 'O Rabb, who are they?'
Allah will say: 'Nine hundred and ninety nine of a thousand are Jahannami while the one is a Jannati.'
On hearing this the Sahaba were overtaken by fear and they asked "O Rasulullah (Sallallahu Alayhi Wasallam), who will that one Janniti be?'
Rasulullah (Sallallahu Alayhi Wasallam) said: 'Do not grieve, the nine hundred and ninety nine will be Ya'jooj and Ma'jooj while you will be the Jannati."' (i.e. your numbers in relation to them will be one in a thousand).