If she cannot afford a sheep, she must then take two turtledoves or two young pigeons. This is taken from Leviticus 12:8.
According to the Mosaic law, the Israelites were to offer specific sacrifices. Leviticus 9:1-4, 15-21 tells us: “On the eighth day, Moses called Aaron and his sons and the elders of Israel. He said to Aaron: “Take for yourself a young calf for a sin offering and a ram for a burnt offering, sound ones, and present them before Jehovah. But you will say to the Israelites, ‘Take a male goat for a sin offering and a calf and a young ram, each a year old, sound ones, for a burnt offering, and a bull and a ram for communion sacrifices, to sacrifice them before Jehovah, and a grain offering mixed with oil, for today Jehovah will appear to you.'” He then presented the offering of the people and took the goat of the sin offering that was for the people and slaughtered it and made a sin offering with it like the first one. And he presented the burnt offering and handled it according to the regular procedure. He next presented the grain offering, filling his hand with some of it and making it smoke on the altar, in addition to the burnt offering of the morning. After that he slaughtered the bull and the ram of the communion sacrifice that was for the people. Then Aaron’s sons handed him the blood, and he sprinkled it around on all sides of the altar. As for the pieces of fat of the bull, the fat tail of the ram, the fat covering the internal organs, the kidneys, and the appendage of the liver, they placed all those pieces of fat on the breasts, after which he made the pieces of fat smoke on the altar. But the breasts and the right leg Aaron waved back and forth as a wave offering before Jehovah, just as Moses had commanded.” The sacrifices were to be unblemished because they pointed to Jesus’ perfect sacrifice. Moreover, with each type of offering, or sacrifice, a specific procedure was to be followed. For example, consider what was required of the mother of a newborn child. Leviticus 12:6 states: “When the days of her purification for a son or a daughter are completed, she will bring a young ram in its first year for a burnt offering and a young pigeon or a turtledove for a sin offering to the entrance of the tent of meeting, to the priest.” God’s requirements were specific, but his loving reasonableness shines radiantly in the Law, as shown in today’s text. Though poor, this worshipper was loved and appreciated just as much as the one bringing a more costly offering.