Matthew 13:51
"Have you understood all these things?" They said to him, "Yes."
Matthew 13:11
And he answered them, "To you it has been given to know the secrets of the kingdom of heaven, but to them it has not been given.
Matthew 13:19
When anyone hears the word of the kingdom and does not understand it, the evil one comes and snatches away what has been sown in his heart. This is what was sown along the path.
Matthew 15:17
Do you not see that whatever goes into the mouth passes into the stomach and is expelled?
Matthew 16:11
How is it that you fail to understand that I did not speak about bread? Beware of the leaven of the Pharisees and Sadducees."
Matthew 24:15
"So when you see the abomination of desolation spoken of by the prophet Daniel, standing in the holy place (let the reader understand),
Mark 4:34
He did not speak to them without a parable, but privately to his own disciples he explained everything.
Mark 7:18
And he said to them, "Then are you also without understanding? Do you not see that whatever goes into a person from outside cannot defile him,
Mark 8:17-18
And Jesus, aware of this, said to them, "Why are you discussing the fact that you have no bread? Do you not yet perceive or understand? Are your hearts hardened?
Luke 9:44-45
"Let these words sink into your ears: The Son of Man is about to be delivered into the hands of men."
Acts 8:30-31
So Philip ran to him and heard him reading Isaiah the prophet and asked, "Do you understand what you are reading?"
1 John 5:20
And we know that the Son of God has come and has given us understanding, so that we may know him who is true; and we are in him who is true, in his Son Jesus Christ. He is the true God and eternal life.