And when the Quran is recited to them, they fall not prostrate,
Nay, (on the contrary), those who disbelieve, belie (Prophet Muhammad (Peace be upon him) and whatever he brought, i.e. this Quran and Islamic Monotheism, etc.).
And Allah knows best what they gather (of good and bad deeds),
So announce to them a painful torment.
Save those who believe and do righteous good deeds, for them is a reward that will never come to an end (i.e. Paradise).