﴿ عَلَىٰٓ أَن نُّبَدِّلَ خَيْرًۭا مِّنْهُمْ وَمَا نَحْنُ بِمَسْبُوقِينَ ﴾

“to replace them with [people] better than they are; for there is nothing to prevent Us [from doing what We will].”

(To replace them by (others) better than them) He says: We are Able to destroy them and replace them with others who are better and more obedient than them. (And We are not to be outrun) We are unable to replace them with others who are better than them.