Matthew 13:11-12
"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 6:45
It stands written in the Prophets, 'And they shall all of them be taught by God'. Every one who listens to the Father and learns from Him comes to me.
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 2:14-15
The unspiritual man rejects the things of the Spirit of God, and cannot attain to the knowledge of them, because they are spiritually judged.
James 1:5
And if any one of you is deficient in wisdom, let him ask God for it, who gives with open hand to all men, and without upbraiding; and it will be given him.