Luke records that after the birth of Jesus, Mary and Joseph went up to Jerusalem to fulfill the requirements of the Mosaic Law:
“Now when the days of her purification according to the law of Moses were completed, they brought Him to Jerusalem to present Him to the Lord (as it is written in the law of the Lord, ‘Every male who opens the womb shall be called holy to the LORD’), and to offer a sacrifice according to what is said in the law of the Lord, ‘A pair of turtledoves or two young pigeons.’” (Luke 2:22–24)
‘And if she is not able to bring a lamb, then she may bring two turtledoves or two young pigeons—one as a burnt offering and the other as a sin offering. So the priest shall make atonement for her, and she will be clean.’ ” (Lev 12:8)
This passage has often raised an objection: since Leviticus 12 prescribes a sin offering following childbirth, and Mary offered that sacrifice, does this imply that Mary had sinned? If she had not sinned, why would a sin offering be required at all? At first glance, the objection appears straightforward. The Law calls for a sin offering; Mary offered it; therefore, Mary must have sinned. Yet this reasoning collapses under closer scrutiny—both biblically and theologically.
Obedience to the Law Does Not Imply Personal Guilt
To begin, Mary’s participation in the purification rites can be explained at the most basic level by obedience. As a faithful daughter of Israel, Mary lived under the Mosaic Law and observed its requirements. Her obedience does not presuppose personal moral fault. Scripture repeatedly presents righteous individuals who submit to legal or ritual obligations not because of sin, but because obedience itself honors God and avoids unnecessary scandal.
The New Testament offers a direct parallel. Jesus Himself submits to John’s baptism—a baptism explicitly described as a “baptism of repentance” (Mark 1:4). If the logic applied to Mary were consistent, one would be forced to conclude that Jesus submitted to baptism because He had sins to repent of. Yet Scripture is unequivocal: Christ is without sin. His baptism was an act of identification, humility, and obedience, not confession.
The same logic applies to Mary. Participation in a ritual associated with purification does not automatically imply moral wrongdoing.
The Deeper Problem with the Objection
When pressed further, the objection leads to an even more troubling implication. If Mary’s offering of a sin sacrifice means she sinned, then one must ask: what was the sin?
The only event prompting the offering was the birth of Jesus. Is the claim, then, that giving birth to the Savior of the world was itself sinful? That motherhood—specifically, the virginal conception brought about by the Holy Spirit—somehow rendered Mary morally impure?
Such a claim would imply that Jesus indirectly, and the Holy Spirit directly, caused Mary to sin. This conclusion is not merely implausible; it is theologically incoherent. Scripture consistently presents the Incarnation as a holy act of divine initiative, not a moral blemish upon the one chosen to bear Christ. The problem, therefore, lies not with Mary, but with a misunderstanding of what the Law means by “sin offering” and “purification.”
Ritual Impurity Is Not Moral Sin
The key to resolving this issue lies in recognizing the difference between ritual impurity and moral impurity. The Mosaic Law uses categories that modern readers often flatten into purely ethical terms, but which functioned differently within Israel’s covenantal system.
The Greek term used in Luke 2:22, καθαρισμός (katharismos), appears elsewhere in Luke’s Gospel (5:12–14; 7:22; 11:39, 41). In these contexts, it does not denote moral cleansing from sin, but ritual purification—restoration to ceremonial fitness under the Law.
Leviticus 12 makes this distinction explicit. The passage repeatedly emphasizes that the woman’s state of impurity arises from blood flow, not from immoral behavior:
“She shall be clean from the flow of her blood. This is the law for her who has borne a male or a female.” (Leviticus 12:7)
Childbirth renders a woman ritually unclean, not morally sinful. The Law treats other natural bodily processes—such as menstruation, nocturnal emissions, or contact with a corpse—in the same way. None of these involve sin, yet all require purification rites before full participation in the sanctuary.
The “atonement” made by the priest in this context does not signify forgiveness of personal wrongdoing. Rather, it signifies restoration to ritual wholeness within the covenant community.
Their Purification
The majority textual manuscripts actually have “their purification” meaning Mary and Jesus (compare different translations). The NET footnote makes a good case for the plural but it asserts it is a reference to Mary and Joseph, not Jesus:
Luke 2:22 tc The translation follows most mss, including early and significant ones (א A B L). Some copyists, aware that the purification law applied to women only, produced mss (76 itpt vg [though the Latin word eius could be either masculine or feminine]) that read “her purification.” But the extant evidence for an unambiguous “her” is shut up to one late minuscule (codex 76) and a couple of patristic citations of dubious worth (Pseudo-Athanasius whose date is unknown, and the Catenae in euangelia Lucae et Joannis, edited by J. A. Cramer. The Catenae is a work of collected patristic sayings whose exact source is unknown [thus, it could come from a period covering hundreds of years]). A few other witnesses (D lat) read “his purification.” The KJV has “her purification,” following Beza’s Greek text (essentially a revision of Erasmus’). Erasmus did not have it in any of his five editions. Most likely Beza put in the feminine form αὐτῆς (autēs) because, recognizing that the eius found in several Latin mss could be read either as a masculine or a feminine, he made the contextually more satisfying choice of the feminine. Perhaps it crept into one or two late Greek witnesses via this interpretive Latin back-translation. So the evidence for the feminine singular is virtually nonexistent, while the masculine singular αὐτοῦ (autou, “his”) was a clear scribal blunder. There can be no doubt that “their purification” is the authentic reading.tn Or “when the days of their purification were completed.” In addition to the textual problem concerning the plural pronoun (which apparently includes Joseph in the process) there is also a question whether the term translated “purification” (καθαρισμός, katharismos) refers to the time period prescribed by the Mosaic law or to the offering itself which marked the end of the time period (cf. NLT, “it was time for the purification offering”).sn Exegetically the plural pronoun “their” creates a problem. It was Mary’s purification that was required by law, forty days after the birth (Lev 12:2-4). However, it is possible that Joseph shared in a need to be purified by having to help with the birth or that they also dedicated the child as a first born (Exod 13:2), which would also require a sacrifice that Joseph would bring. Luke’s point is that the parents followed the law. They were pious.
Although the NET translators provide sufficient proof that “their purification” is the true rendering, they, being protestant, admit there is a problem since Jesus was sinless and hence impute Joseph into the equation. But, Lev 12, says nothing about the husband, but it would definitely include the male child who would have been covered in her blood flow during birth. As Catholics we believe Mary did not have blood flow, and this would have been kept a secret from the authorities as was the virgin birth of Christ. Nonetheless, it must be done so according to the law if Mary was a faithful Jew.
In Matthew 17:24–27, Jesus is asked to pay the Temple tax. He explicitly states He is exempt: “Then the sons are free.” Yet He pays it anyway, explaining: “However, not to give offense to them…” Jesus fulfils a legal obligation that does not bind Him, purely to avoid scandal and to respect the order God had established.
Mary’s action fits this pattern perfectly: She is not bound by the law’s underlying condition. She obeys to avoid misunderstanding and preserve peace. She honours God’s Law without being constrained by its defect-remedying function.
Why a “Sin Offering,” Then?
The Hebrew term translated “sin offering” does not always function as a response to moral transgression. In several contexts, it addresses ritual impurity or ceremonial defilement. The offering removes a barrier to worship, not guilt from the conscience.
This explains why Leviticus 12 provides a provision for the poor. If the woman cannot afford a lamb, she may offer two birds—precisely what Luke records Mary offering. Nothing in the text suggests confession, remorse, or moral failure.
Mary’s offering, therefore, does not testify to sin, but to humility, obedience, and her place among the poor of Israel.
Conclusion: A Law Fulfilled, Not a Sin Confessed
Luke’s account does not depict Mary as confessing sin, but as fulfilling the Law. The purification rite following childbirth addresses ritual impurity tied to physical processes, not moral corruption. To read moral guilt into Mary’s obedience is to impose modern assumptions onto an ancient legal system—and to draw conclusions that Scripture itself does not support.
Just as Jesus’ baptism does not imply personal sin, Mary’s purification does not imply moral fault. Both acts reveal submission to God’s covenantal order, not acknowledgment of wrongdoing.
In the end, the Law that required purification after childbirth finds its deepest meaning not in condemnation, but in fulfillment—fulfilled by the very child Mary brought into the world, who would one day render all purification complete.