Matthew 13:11-12
"Why do you speak to them in parables?" Jesus answered. "To you it has been granted to understand the mysteries of the kingdom of heaven; but to them it has not been granted.
John 6:45
"It is written in the Prophets, "And they shall all of them be taught of God. Every one who has listened to the father and learns from him, comes to me.
John 7:17
"If any one wills to do God's will he shall know concerning my teaching, whether it is from God, or I speak my own authority. Dedicate them in thy truth; thy word is truth."
1 Corinthians 2:14-15
The unspiritual man rejects the teachings of God's Spirit; for him it is folly. He cannot understand it, for it is spiritually discerned,
James 1:5
If any one of you is lacking in wisdom, let him ask it from the God who gives to all men freely and without upbraiding; and it will be given to him.