Matthew 13:51
"Do you understand all these stories?" They answered Him, "Yes."
Matthew 13:11
He answered: "It is you and not they who are granted the privilege of knowing the secrets of the kingdom of heaven.
Matthew 13:19
When anyone hears the message of the kingdom and does not understand it, the wicked one comes and carries off the seed that was sown in his heart. This is what was sown along the path.
Matthew 15:17
Do you not understand that whatever goes into the mouth passes into the stomach and afterwards into the waste?
Matthew 16:11
How is it that you do not understand that I did not speak to you about bread, when I said, keep on guarding yourselves against the yeast of the Pharisees and the Sadducees?"
Matthew 24:15
"So when you see the destructive desecration, mentioned by the prophet Daniel, standing in the Holy Place" -- let the reader take notice --
Mark 4:34
He did not tell them anything except by stories, but to His own disciples He kept on privately explaining everything.
Mark 7:18
And He answered them, "Are you too without understanding yet? Do you not know that nothing from the outside that goes into a man can make him foul,
Mark 8:17-18
And as He noticed it He said to them, "Why are you discussing the fact that you have no bread? Do you not yet know nor understand? Are your minds so dull?
Luke 9:44-45
"You must store away in your memories these words, for the Son of Man is going to be turned over to the hands of men!"
Acts 8:30-31
Then Philip ran up and listened to him reading the prophet Isaiah, and he 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 insight to recognize the True One; and we are in union with the True One through His Son, Jesus Christ. He is the true God and eternal life.