﴿ هَلْ يَنظُرُونَ إِلَّآ أَن تَأْتِيَهُمُ ٱلْمَلَٰٓئِكَةُ أَوْ يَأْتِىَ أَمْرُ رَبِّكَ ۚ كَذَٰلِكَ فَعَلَ ٱلَّذِينَ مِن قَبْلِهِمْ ۚ وَمَا ظَلَمَهُمُ ٱللَّهُ وَلَٰكِن كَانُوٓا۟ أَنفُسَهُمْ يَظْلِمُونَ ﴾

“ARE THEY [who deny the truth] but waiting for the angels to appear unto them, or for God's judgment to become manifest? Even thus did behave those [stubborn sinners] who lived before their time; and [when they were destroyed,] it was not God who wronged them, but it was they who had wronged themselves:”

Initially, arguments are used to explain the discourse about God. If man does not accept the Truth despite these arguments, a time will come when it is brought home to him—individually at the time of death and collectively on Doomsday. If the facts about God are explained to a man rationally and he still ignores them, it is as if he is waiting for God and his angels to manifest themselves at some later stage. Then, of course, he would be compelled to accept the Truth. But accepting it at that time will gain him no credit, whereas if he had accepted it when he had the opportunity, prior to God’s appearance, that would have been to his own great credit.