Exodus 16
14 Ref and the lying of the dew goeth up, and lo, on the face of the wilderness a thin, bare thing, thin as hoar-frost on the earth.
15 Ref And the sons of Israel see, and say one unto another, `What `is' it?' for they have not known what it `is'; and Moses saith unto them, `It `is' the bread which Jehovah hath given to you for food.