Exodus 16:15

16:15 When the children of Israel saw it, they said one to another, "What is it?" For they didn't know what it was. Moses said to them, "It is the bread which Yahweh has given you to eat."
-World English Bible

Other Translation

16:15 And when the children of Israel saw [it], they said one to another, It [is] manna: for they wist not what it [was]. And Moses said unto them, This [is] the bread which the LORD hath given you to eat.
-King James Version