'Unleavened' in the Bible

“When you present a grain offering baked in an oven, it must be made of fine flour, either unleavened cakes mixed with oil or unleavened wafers coated with oil.

If your gift is a grain offering prepared on a griddle, it must be unleavened bread made of fine flour mixed with oil.

Aaron and his sons may eat the rest of it. It is to be eaten in the form of unleavened bread in a holy place; they are to eat it in the courtyard of the tent of meeting.

If he presents it for thanksgiving, in addition to the thanksgiving sacrifice, he is to present unleavened cakes mixed with olive oil, unleavened wafers coated with oil, and well-kneaded cakes of fine flour mixed with oil.

“Take Aaron, his sons with him, the garments, the anointing oil, the bull of the sin offering, the two rams, and the basket of unleavened bread,

From the basket of unleavened bread that was before the Lord he took one cake of unleavened bread, one cake of bread made with oil, and one wafer, and placed them on the fat portions and the right thigh.

The Festival of Unleavened Bread to the Lord is on the fifteenth day of the same month. For seven days you must eat unleavened bread.