None can grasp it except the sincere.*
لا يَمَسُّهُ إِلَّا المُطَهَّرونَ
laa yamassuhooo illal mutahharoon
*56:79 The insincere who are not satisfied with the Quran alone are divinely prevented from understanding the Quran. This concept is repeated throughout the Quran (17:45-46, 18:57). Consequently, they cannot understand this verse. For example, compare this translation of 7:3, 17:46, 41:44, and 56:79 with other translations.