Psalm 78:2

And he answered and said unto them, Because to you it is given to know the mysteries of the kingdom of heaven, but to them it is not given.

All these things spake Jesus in parables to the multitudes; and without a parable he spake not to them:

And without a parable spake he not unto them; but in private he explained them all to his disciples.

Treasury of Scripture Knowledge

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

Therefore I speak to them in parables: that seeing, they may not see; and hearing, they may not hear nor understand.

And he answered and said unto them, Because to you it is given to know the mysteries of the kingdom of heaven, but to them it is not given.

And without a parable spake he not unto them; but in private he explained them all to his disciples.

and opening his mouth, he taught them, saying,

For there is nothing hid, but that it should be brought to light, nor is any thing concealed, but that it should come into open day.