سُبْحَانَ ٱللَّٰهِ
Holy Qur'an
Al-Qur'an
Kids Qur'an
Cf. 6:91 - "no true understanding of God have they when they say, 'Never has God revealed anything unto man.'" See also 34:31 and the corresponding note [38]. Both these passages, as well as the one above, allude to people who like to think of themselves as "believing" in God without, however, allowing their "belief" to interfere in the practical concerns of their lives: and this they justify by conceding to religion no more than a vaguely emotional role, and by refusing to admit the fact of objective revelation - for the concept of revelation invariably implies a promulgation by God, of absolute moral values and, thus, a demand for one's self-surrender to them.
They not only reject the mission of the particular messengers, but they deny the possibility of Allah's sending such mission. Note how they convict themselves of inconsistency by using Allah's name "Most Gracious", even though they may mean it ironically!
Cf. Acts, xiv. 15, where Paul and Barnabas say, in the city of Lystra near the modern Konia, "We also are men with like passions with you, and preach unto you that ye should tum from these vanities..."