30:56
وَقَالَ ٱلَّذِينَ أُوتُوا۟ ٱلْعِلْمَ وَٱلْإِيمَـٰنَ لَقَدْ لَبِثْتُمْ فِى كِتَـٰبِ ٱللَّهِ إِلَىٰ يَوْمِ ٱلْبَعْثِ ۖ فَهَـٰذَا يَوْمُ ٱلْبَعْثِ وَلَـٰكِنَّكُمْ كُنتُمْ لَا تَعْلَمُونَ
But those who were given knowledge and faith will say, "You remained the extent of Allah 's decree until the Day of Resurrection, and this is the Day of Resurrection, but you did not used to know."
Context in Surah Ar-Rum
Nearby ayahs help place verse 30:56 in sequence and meaning.
۞ ٱللَّهُ ٱلَّذِى خَلَقَكُم مِّن ضَعْفٍ ثُمَّ جَعَلَ مِنۢ بَعْدِ ضَعْفٍ قُوَّةً ثُمَّ جَعَلَ مِنۢ بَعْدِ قُوَّةٍ ضَعْفًا وَشَيْبَةً ۚ يَخْلُقُ مَا يَشَآءُ ۖ وَهُوَ ٱلْعَلِيمُ ٱلْقَدِيرُ
Allah is the one who created you from weakness, then made after weakness strength, then made after strength weakness and white hair. He creates what He wills, and He is the Knowing, the Competent.
وَيَوْمَ تَقُومُ ٱلسَّاعَةُ يُقْسِمُ ٱلْمُجْرِمُونَ مَا لَبِثُوا۟ غَيْرَ سَاعَةٍ ۚ كَذَٰلِكَ كَانُوا۟ يُؤْفَكُونَ
And the Day the Hour appears the criminals will swear they had remained but an hour. Thus they were deluded.
فَيَوْمَئِذٍ لَّا يَنفَعُ ٱلَّذِينَ ظَلَمُوا۟ مَعْذِرَتُهُمْ وَلَا هُمْ يُسْتَعْتَبُونَ
So that Day, their excuse will not benefit those who wronged, nor will they be asked to appease [Allah].
وَلَقَدْ ضَرَبْنَا لِلنَّاسِ فِى هَـٰذَا ٱلْقُرْءَانِ مِن كُلِّ مَثَلٍ ۚ وَلَئِن جِئْتَهُم بِـَٔايَةٍ لَّيَقُولَنَّ ٱلَّذِينَ كَفَرُوٓا۟ إِنْ أَنتُمْ إِلَّا مُبْطِلُونَ
And We have certainly presented to the people in this Qur'an from every [kind of] example. But, [O Muhammad], if you should bring them a sign, the disbelievers will surely say, "You [believers] are but falsifiers."