Exodus 29:23

29:23 and one round flat cake of bread, one perforated cake of oiled bread, and one wafer from the basket of bread made without yeast that is before the Lord.

Leviticus 2:4-5

Processed Grain Offerings

2:4 “‘When you present an offering of grain baked in an oven, it must be made of choice wheat flour baked into unleavened loaves mixed with olive oil or unleavened wafers smeared with olive oil. 2:5 If your offering is a grain offering made on the griddle, it must be choice wheat flour mixed with olive oil, unleavened.

Leviticus 2:15

2:15 And you must put olive oil on it and set frankincense on it – it is a grain offering.

Leviticus 7:10

7:10 Every grain offering, whether mixed with olive oil or dry, belongs to all the sons of Aaron, each one alike.

Numbers 6:15

6:15 and a basket of bread made without yeast, cakes of fine flour mixed with olive oil, wafers made without yeast and smeared with olive oil, and their grain offering and their drink offerings.