'Unleavened' in the Bible

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

And he shall offer the ram for a sacrifice of peace offerings unto the LORD, with the basket of unleavened bread: the priest shall offer also his meat offering, and his drink offering.

And the priest shall take the sodden 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 Nazarite, after the hair of his separation is shaven:

The fourteenth day of the second month at even they shall keep it, and eat it with unleavened bread and bitter herbs.

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