'Unleavened' in the Bible

and a basket of unleavened bread, cakes of fine flour mingled with oil, and unleavened wafers anointed with oil, and their meal-offering, and their drink-offerings.

and he shall offer the ram for a sacrifice of peace-offerings unto Jehovah, with the basket of unleavened bread: the priest shall offer also the meal-offering thereof, and the drink-offering thereof.

And the priest shall take the boiled shoulder of the ram, and one unleavened cake out of the basket, and one unleavened wafer, and shall put them upon the hands of the Nazirite, after he hath shaven the head of his separation;

In the second month on the fourteenth day at even they shall keep it; they shall eat it with unleavened bread and bitter herbs:

And on the fifteenth day of this month shall be a feast: seven days shall unleavened bread be eaten.