Allah's wisdom and perfect knowledge

وَيُذْهِبْ غَيْظَ قُلُوبِهِمْ ۗ وَيَتُوبُ ٱللَّهُ عَلَىٰ مَن يَشَآءُ ۗ وَٱللَّهُ عَلِيمٌ حَكِيمٌ

And remove the fury in their [i.e., the believers'] hearts. And Allāh turns in forgiveness to whom He wills; and Allāh is Knowing and Wise.