Exodus 29:23-25

And one loaf of bread, and one cake of oiled bread, and one wafer out of the basket of the unleavened bread that is before the LORD:

And thou shalt put all in the hands of Aaron, and in the hands of his sons; and shalt wave them for a wave offering before the LORD.

And thou shalt receive them of their hands, and burn them upon the altar for a burnt offering, for a sweet savour before the LORD: it is an offering made by fire unto the LORD.