"And your Lord would not destroy the towns" meaning: punish them; he means this nation "until He sends in their mother city" meaning: Mecca "a messenger" and the Messenger is Muhammad "except that its people are wrongdoers" meaning: polytheists. "And what is with Allah is better and more lasting," which is Paradise. "Then will you not reason?" He addresses the polytheists, then he speaks by way of interrogation.
Surah Al-Qasas from (verse 60 to verse 63).