6:25Among them are those who listen to you; but We place covers over their hearts, to prevent them from understanding it, and heaviness in their ears. Even if they see every sign, they will not believe in it. Until, when they come to you, to argue with you, those who disbelieve will say, “These are nothing but myths of the ancients.”

6:32The life of this world is nothing but game and distraction, but the Home of the Hereafter is better for those who are righteous. Do you not understand?

6:65Say, “He is Able to send upon you an affliction, from above you, or from under your feet. Or He can divide you into factions, and make you taste the violence of one another. Note how We explain the revelations, so that they may understand.”

6:98And it is He who produced you from a single person, then a repository, then a depository. We have detailed the revelations for people who understand.

6:151Say, “Come, let me tell you what your Lord has forbidden you: that you associate nothing with Him; that you honor your parents; that you do not kill your children because of poverty—We provide for you and for them; that you do not come near indecencies, whether outward or inward; and that you do not kill the soul which God has sanctified—except in the course of justice. All this He has enjoined upon you, so that you may understand.”