34:9Do they not reflect upon what lies before them and behind them, of the heaven and the earth? If We will, We can make the earth cave in beneath them, or make pieces of the sky fall down on them. In that is a sign for every devout servant.

34:31Those who disbelieve say, “We will never believe in this Quran, nor in what came before it.” If you could only see the wrongdoers, captive before their Lord, throwing back allegations at one another. Those who were oppressed will say to those who were arrogant, “Were it not for you, we would have been believers.”

34:44But We gave them no book to study, and We did not send them any warner before you.

34:45Those before them also denied the Truth, yet they have not attained one-tenth of what We had given them. They rejected My messengers, so how was My disapproval?

34:46Say, “I offer you a single advice: devote yourselves to God, in pairs, or individually; and reflect. There is no madness in your friend. He is just a warner to you, before the advent of a severe punishment.”