Romans 11:34
For who has known the mind of the Lord? Or, who has been his counsellor?
Matthew 11:25
At that time Jesus answered and said: I thank thee, Father, Lord of heaven and of earth, because thou hast hid these things from the wise and prudent, and hast revealed them to babes.
Matthew 13:11
He answered, and said to them: Because it is given to you to know the mysteries of the kingdom of heaven; but to them it is not given.
Matthew 13:35
that the word might be fulfilled which was spoken by the prophet, saying: I will open my mouth in parables; I will utter things that have been kept secret from the foundation of the world.
John 15:15
I no longer call you servants, because the servant knows not what his master does. But I have called you friends; for all things that I have heard from my Father, I have made known to you.
Romans 16:25-26
Now to him who is able to strengthen you according to my gospel, even the preaching of Jesus Christ, according to the revelation of the mystery which was concealed during the times of the ages,
1 Corinthians 2:9-11
But, as it is written: Eye has not seen, and ear has not heard, and into the heart of man have not entered the things which God has prepared for them that love him.
1 Corinthians 2:16
For who has known the mind of the Lord, that he may instruct him? But we have the mind of Christ.