If she cannot afford a lamb, she must use two mourning doves or two pigeons. One will be the burnt offering and the other the offering for sin. So the priest will make peace with the Lord for her, and she will be clean.”
and sacrifice it as an offering for sin. He will take the other and sacrifice it as a burnt offering together with the grain offering. So in the Lord’s presence the priest will make peace with the Lord for the one who is being cleansed.
“Now, if you cannot afford a sheep, you must bring to the Lord two mourning doves or two pigeons as a guilt offering for the sin you committed. One will be an offering for sin, the other a burnt offering.
It is impossible to do what God’s standards demand because of the weakness our human nature has. But God sent his Son to have a human nature as sinners have and to pay for sin. That way God condemned sin in our corrupt nature.