Surah Saba (34:21)
وَمَا كَانَ لَهُۥ عَلَيْهِم مِّن سُلْطَٰنٍ إِلَّا لِنَعْلَمَ مَن يُؤْمِنُ بِٱلْـَٔاخِرَةِ مِمَّنْ هُوَ مِنْهَا فِى شَكٍّ وَرَبُّكَ عَلَىٰ كُلِّ شَىْءٍ حَفِيظٌ
And he had no authority over them, except that We might know who believes in the Hereafter from who, about it, is in doubt; and your Lord is a Preserver over every thing.
Roots in this verse: ك و ن (kwn), س ل ط (slT), ع ل م (Elm), ا م ن (Amn), ا خ ر (Axr), ش ك ك ($kk), ر ب ب (rbb), ك ل ل (kll), ش ي ا ($yA), ح ف ظ (HfZ)