27:3Those who observe the prayers, and give charity regularly, and are certain of the Hereafter.

27:14And they rejected them, although their souls were certain of them, out of wickedness and pride. So see how the outcome was for the mischief-makers.

27:82And when the Word has fallen on them, We will bring out for them from the earth a creature which will say to them that the people are uncertain of Our revelations.