Divine wisdom in revelation methodology

وَقُرْءَانًا فَرَقْنَـٰهُ لِتَقْرَأَهُۥ عَلَى ٱلنَّاسِ عَلَىٰ مُكْثٍ وَنَزَّلْنَـٰهُ تَنزِيلًا

And [it is] a Qur’ān which We have separated [by intervals] that you might recite it to the people over a prolonged period. And We have sent it down progressively.