11 If a person cannot afford to offer two turtledoves or two young pigeons, he must offer four pints of his finest flour as the purification offering for sin. He should not mix it with oil or frankincense because it is an offering for the purification of sin. 12 He will give it to the priest, and the priest will take a handful of the flour as a memorial portion and offer it up as smoke along with the other fire-offerings presented to Me. The flour is a purification offering for sin. 13 This is how the priest will make atonement to cover the sin of anyone guilty of these things, and the guilty will be forgiven. The leftover flour belongs to the priest as in the grain offering.