Allah is informing us that He never destroys a township until He has established evidences for it and its allotted time has ended. When the time for a nation's destruction has come, He never delays it, and He never moves its appointed time forward. This was a message and a warning to the people of Makkah, telling them to give up their Shirk, their stubbornness and disbelief for which they deserved to be destroyed.

﴿ظˆظژظ‚ظژط§ظ„ظڈظˆط§ظ’ ظٹط£ظژظٹظ‘ظڈظ‡ظژط§ ط§ظ„ظ‘ظژط°ظگظ‰ ظ†ظڈط²ظ‘ظگظ„ظژ ط¹ظژظ„ظژظٹظ’ظ‡ظگ ط§ظ„ط°ظ‘ظگظƒظ’ط±ظڈ ط¥ظگظ†ظ‘ظژظƒظژ ظ„ظژظ…ظژط¬ظ’ظ†ظڈظˆظ†ظŒ - ظ„ظ‘ظژظˆظ’ ظ…ظژط§ طھظژط£ظ’طھظگظٹظ†ظژط§ ط¨ظگط§ظ„ظ’ظ…ظژظ„ظژظ€ط¦ظگظƒظژط©ظگ ط¥ظگظ† ظƒظڈظ†طھظژ ظ…ظگظ†ظژ ط§ظ„طµظ‘ظژظ€ط¯ظگظ‚ظگظٹظ†ظژ - ظ…ظژط§ ظ†ظڈظ†ظژط²ظ‘ظگظ„ظڈ ط§ظ„ظ’ظ…ظژظ„ظژظ€ط¦ظگظƒظژط©ظژ ط¥ظگظ„ط§ظ‘ظژ ط¨ظگط§ظ„ط­ظژظ‚ظ‘ظگ ظˆظژظ…ظژط§ ظƒظژط§ظ†ظڈظˆط§ظ’ ط¥ظگط°ظ‹ط§ ظ…ظ‘ظڈظ†ط¸ظژط±ظگظٹظ†ظژ - ط¥ظگظ†ظ‘ظژط§ ظ†ظژط­ظ’ظ†ظڈ ظ†ظژط²ظ‘ظژظ„ظ’ظ†ظژط§ ط§ظ„ط°ظ‘ظگظƒظ’ط±ظژ ظˆظژط¥ظگظ†ظ‘ظژط§ ظ„ظژظ‡ظڈ ظ„ظژط­ظژظ€ظپظگط¸ظڈظˆظ†ظژ ﴾

(6. And they say: "O you (Muhammad) to whom the Dhikr (the Qur'an) has been revealed! Verily, you are a madman!) (7. "Why do you not bring angels to us if you are of the truthful'') (8. We do not send the angels down except with the truth, and in that case, they (the disbelievers) would have no respite!) (9. Verily, We, it is We Who revealed the Dhikr (i.e. the Qur'an) and surely We will guard it (from corruption).)