3:29Say, “Whether you conceal what is in your hearts, or disclose it, God knows it.” He knows everything in the heavens and the earth. God is Powerful over everything.

3:71O People of the Book! Why do you confound the truth with falsehood, and knowingly conceal the truth?

3:118O you who believe! Do not befriend outsiders who never cease to wish you harm. They love to see you suffer. Hatred has already appeared from their mouths, but what their hearts conceal is worse. We have made the messages clear for you, if you understand.

3:154Then after the setback, He sent down security upon you. Slumber overcame some of you, while others cared only for themselves, thinking of God thoughts that were untrue—thoughts of ignorance—saying, “Is anything up to us?” Say, “Everything is up to God.” They conceal within themselves what they do not reveal to you. And they say, “If it was up to us, none of us would have been killed here.” Say, “Even if you Had stayed in your homes, those destined to be killed would have marched into their death beds.” God thus tests what is in your minds, and purifies what is in your hearts. God knows what the hearts contain.

3:187God received a pledge from those who were given the Scripture: “You shall proclaim it to the people, and not conceal it.” But they disregarded it behind their backs, and exchanged it for a small price. What a miserable exchange they made.