ذَلِكَ بِأَنَّ الَّذِينَ كَفَرُوا اتَّبَعُوا الْبَاطِلَ وَأَنَّ الَّذِينَ آمَنُوا اتَّبَعُوا الْحَقَّ مِن رَّبِّهِمْ كَذَلِكَ يَضْرِبُ اللَّهُ لِلنَّاسِ أَمْثَالَهُمْ
That is because the faithless follow falsehood, and the faithful follow the truth from their Lord. That is how Allah draws comparisons for mankind.
Agha Ali Puya Commentary
Commentary on Quran 47:3
[Pooya/Ali Commentary 47:3] (see commentary for verse 1)