2:7God has set a seal on their hearts and on their hearing, and over their vision is a veil. They will have a severe torment.

2:10In their hearts is sickness, and God has increased their sickness. They will have a painful punishment because of their denial.

2:74Then after that your hearts hardened. They were as rocks, or even harder. For there are some rocks from which rivers gush out, and others that splinter and water comes out from them, and others that sink in awe of God. God is not unaware of what you do.

2:88And they said, “Our hearts are sealed.” Rather, God has cursed them for their ingratitude. They have little faith.

2:93And We made a covenant with you, and raised the Mount above you: “Take what We have given you firmly, and listen.” They said, “We hear and disobey.” And their hearts became filled with the love of the calf because of their disbelief. Say, “Wretched is what your faith commands you to do, if you are believers.”

2:97Say, “Whoever is hostile to Gabriel—it is he who revealed it to your heart by God’s leave, confirming what preceded it, and guidance and good news for the believers.”

2:118Those who do not know say, “If only God would speak to us, or a sign would come to us.” Thus said those who were before them. Their hearts are alike. We have made the signs clear for people who are certain.

2:204Among the people is he whose speech about the worldly life impresses you, and he calls God to witness what is in his heart, while he is the most hostile of adversaries.

2:208O you who believe! Enter into submission, wholeheartedly, and do not follow the footsteps of Satan; he is to you an outright enemy.

2:260And when Abraham said, “My Lord, show me how You give life to the dead.” He said, “Have you not believed?” He said, “Yes, but to put my heart at ease.” He said, “Take four birds, and incline them to yourself, then place a part on each hill, then call to them; and they will come rushing to you. And know that God is Powerful and Wise.”

2:283If you are on a journey, and cannot find a scribe, then a security deposit should be handed over. But if you trust one another, let the trustee fulfill his trust, and let him fear God, his Lord. And do not conceal testimony. Whoever conceals it is sinner at heart. God is aware of what you do.