A Christian who tries to take revenge is presumptuous. He claims for himself a role that belongs to God.
لَقَدِ ٱسْتَعْرَضْنَا مِنْ خِلَالِ هذِهِ ٱلْمُنَاقَشَةِ ٱلْمُوجَزَةِ لِرُومَا ٱلْإِصْحَاحِ ١٢ أَسْبَابًا وَجِيهَةً تُظْهِرُ لِمَاذَا لَا ‹ نُبَادِلُ أَحَدًا سُوءًا بِسُوءٍ › .‏