It is in conformity with the requirements of the situation, which is the definition of eloquence  and its basis.1   And  it is free of exaggeration, which is wastefulness in words.

It is clear that the person will be wretched who does not take refuge in a secure stronghold in the face of terrible enemies who wreak much destruction with little action. O people of belief! Such a heavenly stronghold of steel is the Qur’an. Enter it and be saved!

FOURTH INDICATION

Investigative  scholars  and  the  people  of  illumination  have  agreed  that  non- existence is pure evil and existence, pure good. Yes, in the great majority of cases, good, virtues, and perfections are based on existence and are related to it. Even if they are superficially negative  and hint of non-existence, their basis is in existence and pertains to it. While the basis and  leaven of all ugliness, such as misguidance, evil, calamities, and sins, is non-existence and  denial. Their badness and ugliness arise from non-existence. Even if they appear superficially to be positive and pertaining to existence, essentially they are non-existence and denial. Also, observedly, the existence of something like a building is realized through the existence of all its parts. While its destruction, non-existence, and annihilation occur through the non-being of one of its main parts. Furthermore, existence requires an existent  cause, it is based  on a cause that has an actual reality. Whereas non- existence may be based on things which pertain to non-existence. Such things may be the cause of something non-existent.

In consequence of this rule, despite the awesome destruction in the universe of devils from among jinn and men, and the varieties of unbelief, misguidance, evil, and destruction they perpetrate, they neither interfere one iota in creation, nor do they have  any  share  in  divine  sovereignty.  Moreover,  they do  not perform  those acts through any power  or ability; they perpetrate many of the things they do through neglect and abstaining from  action. They commit evils by not allowing good to be done, that is, they become evil. For since bad and evil are a sort of destruction, their causes  do  not  have  to  be  an  existent  power  and  active  creativity.  Indeed,  vast destruction is wrought due to one non-existent matter or one condition being nullified.

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1   See, al-Khamawi, Khizana al-Adab, ii, 482; al-Qazwani, al-Idah fi ‘Ulum al-Balagha, i, 15-6.