Example in the Quran

يُخَٰدِعُونَ ٱللَّهَ وَٱلَّذِينَ ءَامَنُواْ وَمَا يَخۡدَعُونَ إِلَّآ أَنفُسَهُمۡ وَمَا يَشۡعُرُونَ

They seek to deceive Allah and the believers, yet they only deceive themselves, but they fail to perceive it.