Matthew 13:11
"Because," He replied, "while to you it is granted to know the secrets of the Kingdom of the Heavens, to them it is not.
John 7:17
If any one is willing to do His will, he shall know about the teaching, whether it is from God or originates with me.
1 Corinthians 1:30
But you--and it is all God's doing--are in Christ Jesus: He has become for us a wisdom which is from God, consisting of righteousness and sanctification and deliverance;
Colossians 2:3
In Him all the treasures of wisdom and knowledge are stored up, hidden from view.
Hebrews 4:12-13
For God's Message is full of life and power, and is keener than the sharpest two-edged sword. It pierces even to the severance of soul from spirit, and penetrates between the joints and the marrow, and it can discern the secret thoughts and purposes of the heart.