'Riddles' in the Bible

Mouth to mouth do I speak to him openly, and not in riddles; and the form of Jehovah doth he behold. Why then were ye not afraid to speak against my servant, against Moses?

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

And at the latter time of their kingdom, when the transgressors shall have come to the full, a king of bold countenance, and understanding riddles, shall stand up.