﴿ سَنُرِيهِمْ ءَايَٰتِنَا فِى ٱلْءَافَاقِ وَفِىٓ أَنفُسِهِمْ حَتَّىٰ يَتَبَيَّنَ لَهُمْ أَنَّهُ ٱلْحَقُّ ۗ أَوَلَمْ يَكْفِ بِرَبِّكَ أَنَّهُۥ عَلَىٰ كُلِّ شَىْءٍۢ شَهِيدٌ ﴾

“In time We shall make them fully understand Our messages [through what they perceive] in the utmost horizons [of the universe] and within them­selves, so that it will become clear unto them that this [revelation] is indeed the truth. [Still,] is it not enough [for them to know] that thy Sustainer is witness unto everything?”

We shall show them Our signs in the horizons in all the regions of the heavens and the earth in the way of the luminous celestial bodies the varieties of vegetation and trees and in their own souls in the way of the exquisite craftsmanship and unique wisdom inherent in their creation until it becomes clear to them that it namely the Qur’ān is the truth revealed by God informing of the Resurrection the Reckoning and the Punishment so that they realise that they will be punished for their disbelief in it and in the one who has come with it. Is it not sufficient that your Lord bi-rabbika governs the verb yakfi ‘sufficient’ is witness to all things? annahu ‘alā kulli shay’in shahīd substitutes for bi-rabbika. In other words is not sufficient proof of your truthfulness that nothing whatsoever can be hidden from God?