وَدَّ كَثِيرٌ مِّنْ أَهْلِ الْكِتَابِ لَوْ يَرُدُّونَكُم مِّن بَعْدِ إِيمَانِكُمْ كُفَّارًا حَسَدًا مِّنْ عِندِ أَنفُسِهِم مِّن بَعْدِ مَا تَبَيَّنَ لَهُمُ الْحَقُّ ۖ فَاعْفُوا وَاصْفَحُوا حَتَّىٰ يَأْتِيَ اللَّهُ بِأَمْرِهِ ۗ إِنَّ اللَّهَ عَلَىٰ كُلِّ شَيْءٍ قَدِيرٌ (109)
(2:109) Many of the people of the Book desire to turn you anyhow back to unbelief. They wish this out of the envy of their hearts though the Truth has become quite clear to them. Yet, you should show forbearance and forgiveness to them' *111 till Allah Himself enforces His judgement.
*111). This means that one should neither allow oneself to get angry at their spite and hostility, nor waste one's valuable time by engaging in useless debates and acrimonious polemics. It is better to wait patiently and observe how God deals with them. Instead of wasting energy in frivolous pursuits such as those menti~ above one should spend it in the remembrance of God and in acts of goodness, for it is these rather than barren controversies that will benefit man in the Life to Come.