Ezekiel 17:2

And the LORD sent Nathan unto David. And he came unto him, and said unto him, There were two men in one city; the one rich, and the other poor. The rich man had exceeding many flocks and herds: But the poor man had nothing, save one little ewe lamb, which he had bought and nourished up: and it grew up together with him, and with his children; it did eat of his own meat, and drank of his own cup, and lay in his bosom, and was unto him as a daughter. And there came a traveler unto the rich man, and he spared to take of his own flock and of his own herd, to dress for the wayfaring man that was come unto him; but took the poor man's lamb, and dressed it for the man that was come to him.

Then said I, Ah Lord GOD! they say of me, Doth he not speak parables?

I have also spoken by the prophets, and I have multiplied visions, and used similitudes, by the ministry of the prophets.

Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand.