'Unleavened' in the Bible

And Gideon went in, and made ready a kid, and unleavened cakes of an ephah of meal: the flesh he put in a basket, and he put the broth in a pot, and brought it out unto him under the oak, and presented it.

And the angel of God said unto him, Take the flesh and the unleavened cakes, and lay them upon this rock, and pour out the broth. And he did so.

Then the angel of Jehovah put forth the end of the staff that was in his hand, and touched the flesh and the unleavened cakes; and there went up fire out of the rock, and consumed the flesh and the unleavened cakes; and the angel of Jehovah departed out of his sight.