﴿ وَمَا كَانَ جَوَابَ قَوْمِهِۦٓ إِلَّآ أَن قَالُوٓا۟ أَخْرِجُوهُم مِّن قَرْيَتِكُمْ ۖ إِنَّهُمْ أُنَاسٌۭ يَتَطَهَّرُونَ ﴾

“But his people's only answer was this: "Expel them from your land! Verily, they are folk who make themselves out to be pure!””

In the third verse (82) Lut (علیہ السلام) in response to his word of advice has been put in a way that it shows that his people could not find a suitable rejoinder to what he had said. But, they were still adamant and started saying among themselves that these people seem to be self-righteous claiming a lot of purity for themselves. The treatment they deserved was that they should be thrown out of their town.