Matthew 13:11-12
And He answered them, saying, Because it is granted unto you to know the mysteries of the kingdom of heaven, but to them it is not granted:
John 6:45
It is written in the prophets, "And they shall all be taught of God." Every one therefore that hath heard and learned from the Father, cometh unto me.
John 7:17
If any man desire to do his will, he shall know concerning the doctrine, whether it be of God, or whether I speak of myself.
1 Corinthians 2:14-15
But the natural man receiveth not the things of the Spirit of God: for they are foolishness to him; and he cannot understand them, because they are spiritually discerned.
James 1:5
And if any of you lack wisdom, let him ask it of God, who giveth to all men liberally and upbraideth not, and it shall be given him.