Psalm 78:2

And He, answering, said to them, "Because to you it has been given to know the mysteries of the Kingdom of Heaven, but to them it has not been given.

All these things Jesus spake to the multitudes in parables; and, without a parable, He was wont to speak nothing to them;

And without a parable He spake not to them; but privately to His disciples He explained all things.

Treasury of Scripture Knowledge

I will open my mouth in a parable: I will utter dark sayings of old:

On this account, I speak to them in parables; because, seeing, they see not; and, hearing, they hear not, nor understand.

And He, answering, said to them, "Because to you it has been given to know the mysteries of the Kingdom of Heaven, but to them it has not been given.

And without a parable He spake not to them; but privately to His disciples He explained all things.

and, opening His mouth, He taught them, saying,

For there is nothing hid, except that it should be manifested; nor was anything made secret, but that it should come to light.