قُرآنًا عَرَبِيًّا غَيْرَ ذِي عِوَجٍ لَّعَلَّهُمْ يَتَّقُونَ
[39:28]
An Arabic Quran without any crookedness, that they may guard (against evil).
(It is) a Qur'an in Arabic, without any crookedness (therein): in order that they may guard against Evil.
A Lecture in Arabic, containing no crookedness, that haply they may ward off (evil).