Verse and its interpretation

قال تعالى:{أَفَلَا يَتَدَبَّرُونَ الْقُرْآنَ وَلَوْ كَانَ مِنْ عِندِ غَيْرِ اللَّهِ لَوَجَدُوا فِيهِ اخْتِلَافًا كَثِيرًا}
النساء : الآية82

Interpretation of the Noble Verse:

The Almighty said: (Do they not then reflect upon the Qur’an) meaning: Do they not think about the Qur’an? Contemplation is looking at the end of the matter, and contemplating everything is its end. (And if it had been from other than Allah, they would have found within it much discrepancy) meaning much disparity and contradiction, as Ibn Abbas said. It was said: They would have found within it, meaning: in the information about the unseen, what was and what will be, much discrepancy. Do they not think about it and know – by the absence of contradiction in it and the truth of what it informs – that it is the speech of Allah Almighty, because what is not from Allah is not free from contradiction and difference.
Tafsir al-Baghawi