In the Holy Book of Romans 5:12 "Just as through one man sin entered the world, and death through sin, and thus death spread to all men, because all sinned" proves that death is because of our free choice to sin not because we inherited Adam's sin. Therefore, why then should we believe that original sin passed down from Adam to us, and why would there be a need for infant baptism?
The verse "For that all have sinned," is to be regarded as explanatory of the belief that death passed down to all, in consequence of the sin of the one man. We are born with Adam's sin and its consequence, which is death; for death is the wage of sin. Adam's sin has infected all his posterity; and the corrupt nature inherited from Adam drags all his posterity into sin. When St. Paul says, "so death passed upon all men, for that all sinned" he can only mean, that all are held to have taken part in that first sin. All are born with a sinful nature; and the seeds of this evil soon vegetate, and bring forth corresponding fruit. There has never been one instance of an immaculate human soul since the fall of Adam not even St. Mary. St. Paul also says, "For if by the one man's offense death reigned" (Rom 5:17) and "Therefore, as through one man's offense judgment came to all men" (Rom 5:18).
"For as by one man's disobedience many were made sinners" (Rom 5:19).
David the prophet says, "Behold, I was brought forth in iniquity, and in sin my mother conceived me" (Psalms 50:5).
Regarding infant baptism, there are many references in the Holy Bible, e.g., Holy Book of Acts 2:37-39 and Holy Book of Colossian 2:11, 12 prove infant baptism in the early Church.