JALÂL – جلال
Literally: Grandeur. Glory.
Allah's being glorious in majesty. Ineffable Ilahî majesty.
Any Ilahî attribute of might or wrath as distinguished from Jamâl.
In ‘Ilm al-Kalâm: The manifestation of Janâb-i Haqq’s wrath and grandeur. Because of His Jalâl, He is not perceptible and comprehensible by the senses and feelings of man.
“Know this: in ‘âlam of the Pre-Eternal attributes, Al-Ahad has two manifestations, those pertaining to Jalâl and those pertaining to Jamâl. Through their manifestation in ‘âlam of the attributes of actions, they appear as grace and wrath, and goodness and majesty. Then inclining to ‘âlam of actions, تَحْلِيَه 1 and تَخْلِيَه 2 arise. Then, being imprinted on ‘âlam of the âkhirah, which is one of ‘âlam of works, grace is manifested as Jannah and nûr, and wrath is manifested as Jahannam and fire. And being reflected in ‘âlam of dhikr, dhikr is divided into hamd and tasbîh. And being reflected in ‘âlam of speech, they diversify into command and prohibition. And being depicted in ‘âlam of guidance (irshad), they divide into encouragement and restraint, and reassurance and warning. And through their manifestation in the conscience, hope and fear are born. And so on. Moreover, it is the mark of guidance (irshad) to preserve the balance between hope and fear, in order that hope may induce striving and work, and fear may restrain from transgression, and a person will not despair of Rahmah and opt-out in blameworthy fashion, or feel sure he will not be punished so unconcernedly go astray.” Signs of Miraculousness ( 71 )
The reason for the positioning of the Names اَلرَّحْمنِ الرَّحِيمِ and being mentioned together with the Lafza-i Jalâl: just as from the Name اَللّه which is Lafza-i Jalâl, Glory (Jalâl) with its chain manifests, so does Beauty (Jamâl) with its chain manifest from the Names اَلرَّحْمنِ الرَّحِيمِ (Ar-Rahmân Ar-Rahîm). Since Glory and Beauty are two roots and sources when they start to manifest in each ‘âlam, branches originating from them come into existence like command and prohibition, reward and punishment, encouraging and threatening, tasbîh and tahmîd, fear and hope and so on…
Signs of Miraculousness-Surah Al-Fâtiha