'Unleavened Bread' in the Bible
" 'But if you bring a grain offering of something oven-baked, [it must be of] finely milled flour [as] ring-shaped unleavened bread [mixed] with oil or wafers of unleavened bread smeared with oil.
If your offering [is] a [grain] offering [baked] on a flat baking pan, it must be finely milled flour, unleavened bread mixed with oil;
And the remainder thereof shall Aaron and his sons eat: with unleavened bread shall it be eaten in the holy place; in the court of the tabernacle of the congregation they shall eat it.
If he presents it for thanksgiving, in addition to the thanksgiving sacrifice he shall present ring-shaped unleavened bread mixed with oil and unleavened bread wafers smeared with oil and well-mixed ring-shaped bread cakes of finely milled flour mixed with oil.
Along with the cakes of unleavened bread, he is to bring his thanksgiving offering with his peace offerings.
Take Aaron and his sons with him, and the garments, and the anointing oil, and a bullock for the sin offering, and two rams, and a basket of unleavened bread;
And out of the basket of unleavened bread, that was before the LORD, he took one unleavened cake, and a cake of oiled bread, and one wafer, and put them on the fat, and upon the right shoulder:
And Moses spoke to Aaron, and to Eleazar and to Ithamar, his sons that were left, Take the oblation that is left of Jehovah's offerings by fire, and eat it with unleavened bread beside the altar; for it is most holy.
And on the fifteenth day of the same month is the feast of unleavened bread unto the LORD: seven days ye must eat unleavened bread.