'Unleavened Bread' in the Bible

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

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

Then on the fifteenth day of the same month there is the Feast of Unleavened Bread to the Lord; for seven days you shall eat unleavened bread.