11 And he said to them, To you it is given to know the private of the kingdom of God [To you it is given to know the mystery, or private, of the kingdom of God]. But to them that be withoutforth, all things be made in parables,
12 that they seeing see, and see not, and they hearing hear, and understand not; lest [that] sometime they be converted, and sins be forgiven to them.
13 And he said to them, Know not ye this parable? and how ye shall know all parables?
The implication in this exchange between Jesus and His disciples is that God hides certain truths from certain people lest those people “see” and “hear” and “understand” and “be converted” and have their “sins be forgiven to them.” At the beginning of His parable about seed (which is His Word), Jesus speaks of the birds of heaven eating the seed before it has a chance to sprout, which implies the same keeping from certain people certain truths.
Parables, says Jesus, are designed to hide truth not reveal it.
Why is this?
He asks His disciples, “Know you not this parable? And how shall you know all parables?”
And the answer?
Knowledge of God and His truth is a gift. Truth is hidden from everyone — from all people — unless God the Holy Spirit opens the eyes, the ears, the mind, the heart, the soul to that Truth.