Allah informs of His favors and His mercy for His creatures, for He revealed the Qur'an to His servants, He made memorizing and understanding of it easy for those on whom He has bestowed His mercy,

﴿الرَّحْمَـنُ - عَلَّمَ الْقُرْءَانَ - خَلَقَ الإِنسَـنَ - عَلَّمَهُ البَيَانَ ﴾

(Ar-Rahman! He has taught the Qur'an. He created man. He taught him Al-Bayan.) Al-Hasan said: "Eloquent speech.'' This refers to Allah teaching the Qur'an, that is, teaching the servants how to recite it by making it easy for them to speak and pronounce letters with the various parts of the mouth, such as the alveolar bridge, the tongue and the lips