Here is another distinction between Catholics and Protestants... Protestants see Christ's sacrifice on the Cross as removing all sins... and yet, we still sin. Catholics see it for what it was... the sacrificial offering of the New Covenant. What was lost in Adam's obedience was restored by Christ on the Cross.
Some see Original Sin as a stain on one's soul. How is this stain passed from generation to generation? Beats me. Rather, the Church sees it better as something that was lost... our family relationship with God. In the Creation story, God rested on the seventh day... because He was tired? No. He sealed His creation with a covenant (Shiva--seven). A covenant is a family bond. Adam broke that bond in his disobedience. Just as the neighbor kids can't adopt themselves into my family, so we couldn't reforge that bond with God. Only God could make us family again and He did so by making the New Covenant with Christ as His sacrificial offering.
Original Sin wasn't a stain that was removed, it was a missing bond that was restored.
Protestants don’t believe the atonement removed all sin. Instead, Jesus’ sacrifice removed the penalty of sin - that’s a big difference.
Christians have 2 natures. As Paul points out when one is born again, they are filled with the Holy Spirit, but the “old man” or flesh nature is still present in the believer at war with the Holy Spirit. Everyone still sins because we still have the flesh nature within us, which will remain until we get to Heaven.
As for sin from generation to generation: Romans 3:10-12: As it is written, ‘There is NONE righteous, no not one. There is none that understandeth: there is is none that seeketh God. They have all gone out of the way; they have been made altogether unprofitable; there is NONE that doeth good, no not one.”
And again in Romans 3:20- “Therefore by the works of the Law shall NO flesh be justified in his sight; for by the Law cometh the knowledge of sin.”
Romans 3:22-26, 27-28 - “To wit, the righteousness of God by the faith of Jesus Christ unto all and upon all who BELIEVE. For there is no difference: for all have sinned and are deprived of the glory of God. And are JUSTIFIED FREELY BY HIS GRACE, through the REDEMPTION that is in Christ Jesus. Whom God hath set forth to be a RECONCILIATION THROUGH FAITH in his blood to declare his righteousness by the forgiveness of the sins that are passed. “
“Where is then the rejoicing? It is excluded. By what Law of works? Nay, but by the Law of FAITH. Therefore we conclude that a man is JUSTIFIED BY FAITH without the works of the Law.”
All men have sinned, all are Hell-bound upon entry into this world. It is Christ alone who can change this. Nothing we do, nothing we CAN do, can earn our salvation. Any “works” are a RESULT of regeneration and the saving faith we possess. It is part of the sanctification process - not the Justification - which, as Paul says here clearly, is accomplished through faith alone in Christ’s sacrifice. He is sufficient and He alone can do what we cannot in our flesh, being creatures of sin.