Mark 4:13

And He says to them, Do you not understand this parable? and how will you know all parables?

So many as I love, I rebuke and chastise; be zealous, and repent.

Therefore hear ye the parable of the sower.

Do you understand all these things? They say to Him, Yea.

Peter responding said to Him, Explain unto us the parable.

And Jesus knowing said to them, Why do you reason among yourselves, O ye of little faith, because you did not take bread?

And when He came from the multitude into the house, His disciples asked Him the parable.

And this is the parable: The seed is the word of God.

And He said to them, O ye foolish, and slow in heart to believe in all those things which the prophet spoke!

And I, brethren, was not able to speak unto you as unto spiritual, but as unto carnal, even babes in Christ.

Concerning whom there is much word to us, and difficult to speak, since you are dull of hearing.

Treasury of Scripture Knowledge

And he said unto them, Know ye not this parable? and how then will ye know all parables?

And He says to them, Are you still without understanding? Do you not know that everything external entering into a man is not able to defile him?