To say this is to totally ignore God’s covenant with Israel.
(both the House of Israel and the House of Judah)
Mary was Jewish and under the old testament covenant.
She was born just like everyone else but she was righteous in the God of Abraham ,Issac and Jacobs eyes because she did follow that covenant .
As was John the Baptist and his parents also.
Sin is sin and all sin is unrighteous .
Jesus came to pay for that sin , the ultimate sacrifice.
Baptism is not to remove original sin as Jesus own sacrifice takes care of that for those who believe in him.
Baptisim is an outward expression of a person accepting Jesus sacrifice as paying for your sins in full and making you righteous in God’s eye.
“”To say this is to totally ignore God’s covenant with Israel.””
That’s not true and salvation would limited to Jews only if we lived under the OT covenant, dear friend.
The OT is revealed in the NT through Christ bringing about a New covenant that’s not just for Jews. The Church is the new Israel. the new people of God- meaning “universal salvation” for gentiles as well.
NOSTRA AETATE from the 2nd Vatican Council explains this well.
http://www.ewtn.com/library/councils/v2non.htm
The Church keeps ever in mind the words of the Apostle about his kinsmen: “theirs is the sonship and the glory and the covenants and the law and the worship and the promises; theirs are the fathers and from them is the Christ according to the flesh” (Rom. 9:4-5), the Son of the Virgin Mary. She also recalls that the Apostles, the Church’s main-stay and pillars, as well as most of the early disciples who proclaimed Christ’s Gospel to the world, sprang from the Jewish people.
As Holy Scripture testifies, Jerusalem did not recognize the time of her visitation,(9) nor did the Jews in large number, accept the Gospel; indeed not a few opposed its spreading.(10) Nevertheless, God holds the Jews most dear for the sake of their Fathers; He does not repent of the gifts He makes or of the calls He issues-such is the witness of the Apostle.(11) In company with the Prophets and the same Apostle, the Church awaits that day, known to God alone, on which all peoples will address the Lord in a single voice and “serve him shoulder to shoulder” (Soph. 3:9).(12)
Since the spiritual patrimony common to Christians and Jews is thus so great, this sacred synod wants to foster and recommend that mutual understanding and respect which is the fruit, above all, of biblical and theological studies as well as of fraternal dialogues.
True, the Jewish authorities and those who followed their lead pressed for the death of Christ;(13) still, what happened in His passion cannot be charged against all the Jews, without distinction, then alive, nor against the Jews of today. Although the Church is the new people of God, the Jews should not be presented as rejected or accursed by God, as if this followed from the Holy Scriptures. All should see to it, then, that in catechetical work or in the preaching of the word of God they do not teach anything that does not conform to the truth of the Gospel and the spirit of Christ.
Furthermore, in her rejection of every persecution against any man, the Church, mindful of the patrimony she shares with the Jews and moved not by political reasons but by the Gospel’s spiritual love, decries hatred, persecutions, displays of anti-Semitism, directed against Jews at any time and by anyone.
Besides, as the Church has always held and holds now, Christ underwent His passion and death freely, because of the sins of men and out of infinite love, in order that all may reach salvation. It is, therefore, the burden of the Church’s preaching to proclaim the cross of Christ as the sign of God’s all-embracing love and as the fountain from which every grace flows.