وَكَذَٰلِكَ نُصَرِّفُ ٱلْءَايَٰتِ

7:59.

Important Words:

درست (thou hast learnt well) is derived from درس which means, it became effaced, erased or obliterated; or transitively, it effaced, erased or obliterated. درس الثوب means, the cloth became old and worn out. Similarly, درس الثوب means, he rendered the cloth old and worn out. درس الکتاب means, he read the book or he read it repeatedly so as to remember it; or he made it easy to remember by much reading; or he learnt or studied it (Lane).

Commentary:

The verse purports to say, "We have explained Our teachings in various ways with the result that believers have acquired perfect belief in them, while disbelievers have rejected them, saying, 'You have learnt these teachings from Jews and Christians and are now repeating them to us.'" The verb درست (thou hast learnt well) has thus been used here ironically. Taking the transitive meaning of درست the clause would mean that disbelievers reject the teachings, saying: "You have read or recited the signs and teachings you claim to have brought to us and we have heard them. That is enough; do not bother us any more."

In fact, whereas the teachings of the Quran benefit those who accept them, they serve the purpose of establishing the guilt of those who reject them so that they become answerable to God for their rejection.