2:44Do you command people to virtuous conduct, and forget yourselves, even though you read the Scripture? Do you not understand?

2:73We said, “Strike him with part of it.” Thus God brings the dead to life; and He shows you His signs, that you may understand.

2:75Do you hope that they will believe in you, when some of them used to hear the Word of God, and then deliberately distort it, even after understanding it?

2:76And when they come across those who believe, they say, “We believe,” but when they come together privately, they say, “Will you inform them of what God has disclosed to you, so that they might dispute with you concerning it before your Lord?” Do you not understand?

2:164In the creation of the heavens and the earth; in the alternation of night and day; in the ships that sail the oceans for the benefit of mankind; in the water that God sends down from the sky, and revives the earth with it after it had died, and scatters in it all kinds of creatures; in the changing of the winds, and the clouds disposed between the sky and the earth; are signs for people who understand.

2:171The parable of those who disbelieve is that of someone who calls upon someone who hears nothing except screaming and yelling. Deaf, dumb, and blind—they do not understand.

2:179There is life for you in retaliation, O people of understanding, so that you may refrain.

2:197The Hajj is during specific months. Whoever decides to perform the Hajj—there shall be no sexual relations, nor misconduct, nor quarrelling during the Hajj. And whatever good you do, God knows it. And take provisions, but the best provision is righteousness. And be mindful of Me, O people of understanding.

2:242God thus explains His revelations to you, so that you may understand.