concealed enmity

يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ لَا تَتَّخِذُوا۟ بِطَانَةً مِّن دُونِكُمْ لَا يَأْلُونَكُمْ خَبَالًا وَدُّوا۟ مَا عَنِتُّمْ قَدْ بَدَتِ ٱلْبَغْضَآءُ مِنْ أَفْوَٰهِهِمْ وَمَا تُخْفِى صُدُورُهُمْ أَكْبَرُ ۚ قَدْ بَيَّنَّا لَكُمُ ٱلْـَٔايَـٰتِ ۖ إِن كُنتُمْ تَعْقِلُونَ

O you who have believed, do not take as intimates those other than yourselves [i.e., believers], for they will not spare you [any] ruin. They wish you would have hardship. Hatred has already appeared from their mouths, and what their breasts conceal is greater. We have certainly made clear to you the signs, if you will use reason.

إِن يَسْـَٔلْكُمُوهَا فَيُحْفِكُمْ تَبْخَلُوا۟ وَيُخْرِجْ أَضْغَـٰنَكُمْ

If He should ask you for them and press you, you would withhold, and He would expose your hatred [i.e., unwillingness].