'Unleavened' in the Bible

and a basket of unleavened bread, finely milled flour of ring-shaped bread cakes mixed with oil, and wafers of unleavened bread smeared with oil, and their grain offering and their libations.

he will offer a ram as a sacrifice of a fellowship offering to Yahweh, in addition to the basket of the unleavened bread; the priest will offer his grain offering and his libation.

The priest will take the shoulder from the ram that is boiled, and one ring-shaped bread cake of unleavened bread from the basket, and one wafer of unleavened bread, and he will put [them] on the hands of the Nazirite after he has shaved {his consecrated head}.

On the second month on the fourteenth day {at twilight} they will observe it; they will eat it with unleavened bread and bitter plants.

On the fifteenth day of this month [is] a religious feast, unleavened bread must be eaten for seven days.