Leviticus 5:10, 12, 18

The priest will then prepare the second bird as a burnt offering, following all the procedures that have been prescribed. Through this process the priest will purify you from your sin, making you right with the LORD, and you will be forgiven.

Take the flour to the priest, who will scoop out a handful as a representative portion. He will burn it on the altar on top of the special gifts presented to the LORD. It is an offering for sin.

For a guilt offering, you must bring to the priest your own ram with no defects, or you may buy one of equal value. Through this process the priest will purify you from your unintentional sin, making you right with the LORD, and you will be forgiven.