Psalm 78:2

I will open my mouth in a parable; I will utter riddles from of old,

I will incline mine ear to a parable, I will open my riddle upon the harp.

to understand a proverb and an allegory, the words of the wise and their enigmas.

And he answering said to them, Because to you it is given to know the mysteries of the kingdom of the heavens, but to them it is not given;

All these things Jesus spoke to the crowds in parables, and without a parable he did not speak to them,

but without a parable spoke he not to them; and in private he explained all things to his disciples.

Treasury of Scripture Knowledge

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

I will incline mine ear to a parable, I will open my riddle upon the harp.

For this cause I speak to them in parables, because seeing they do not see, and hearing they do not hear nor understand;

to understand a proverb and an allegory, the words of the wise and their enigmas.

And he answering said to them, Because to you it is given to know the mysteries of the kingdom of the heavens, but to them it is not given;

but without a parable spoke he not to them; and in private he explained all things to his disciples.

and, having opened his mouth, he taught them, saying,

For there is nothing hidden which shall not be made manifest; nor does any secret thing take place, but that it should come to light.