The Table Spread - 5:79
They did not warn one another about the evil they were doing. How evil was what they did.
Related:
The Table Spread/5:61
"When they came to you, they said: "We believe". But they entered you with their disbelief and left you with their disbelief. Allah knows better what they conceal."
The Table Spread/5:62
You see most of them running about in sin and enmity and forbidden food. How evil is what they do!
The Table Spread/5:63
Should not their rabbis and their clergymen have forbidden them from speaking sinful words and eating unlawful food? How wicked what they do!
Prophet Hud/11:116
Should not the righteous of the generations before you have prevented evil in the earth? Except a few whom We saved from them. As for the wrongdoers, they indulged in the prosperity given to them, so they joined the criminals.