أَمْ تَقُولُونَ إِنَّ إِبْرَاهِيمَ وَإِسْمَاعِيلَ وَإِسْحَاقَ وَيَعْقُوبَ وَالْأَسْبَاطَ كَانُوا هُودًا أَوْ نَصَارَى قُلْ أَأَنتُمْ أَعْلَمُ أَمِ اللَّهُ وَمَنْ أَظْلَمُ مِمَّن كَتَمَ شَهَادَةً عِندَهُ مِنَ اللَّهِ وَمَا اللَّهُ بِغَافِلٍ عَمَّا تَعْمَلُونَ
[Ask them,] ‘Do you say that Abraham, Ishmael, Isaac, Jacob, and the Tribes were Jews or Christians?’ Say, ‘Is it you who know better, or Allah?’ And who is a greater wrongdoer than someone who conceals a testimony that is with him from Allah? And Allah is not oblivious of what you do.
Agha Ali Puya Commentary
Commentary on Quran 2:140
[Pooya/Ali Commentary 2:140] Please refer to the commentary of verses 20 and 135 of this surah. The question put in this verse is, in fact, a disapproval of the belief of the Jews and the Christians, as it has been used in verse 195 of al Araf to condemn the idolworshippers.