And of them there are some who listen to you; but We have set veils on their hearts, so they understand it not, and deafness in their ears; if they see every one of the Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) they will not believe therein; to the point that when they come to you to argue with you, the disbelievers say: "These are nothing but tales of the men of old."
Verily, We sent (Messengers) to many nations before you (O Muhammad PBUH). And We seized them with extreme poverty (or loss in wealth) and loss in health with calamities so that they might believe with humility.
When Our Torment reached them, why then did they not believe with humility? But their hearts became hardened, and Satan made fair-seeming to them that which they used to do.
So, when they forgot (the warning) with which they had been reminded, We opened to them the gates of every (pleasant) thing, until in the midst of their enjoyment in that which they were given, all of a sudden, We took them to punishment, and lo! They were plunged into destruction with deep regrets and sorrows.
Again, more truths. Reminds me of certain events and people that I came across.