" 'Suppose he offers a friendship offering to show he is thankful. Then together with the thank offering he must offer flat cakes of bread. He must make them without yeast. He must mix them with olive oil. Or he must offer wafers that are made without yeast. He must spread oil on them. Or he must offer flat cakes that are made out of fine flour. He must add oil to it. He must work the flour and mix it well.