Yet the scripture teaches that we are shaped in iniquity from the very womb:
Psa_51:5 Behold, I was shapen in iniquity; and in sin did my mother conceive me.
That a clean thing cannot come forth from an unclean thing:
Job_14:4 Who can bring a clean thing out of an unclean? not one.
That death and condemnation have passed down on all:
"But not as the offence, so also is the free gift. For if through the offence of one many be dead, much more the grace of God, and the gift by grace, which is by one man, Jesus Christ, hath abounded unto many. And not as it was by one that sinned, so is the gift: for the judgment was by one to condemnation, but the free gift is of many offences unto justification." (Rom 5:15-16)
Why would God regard something as "innocent" when it is shaped in iniquity? Why would God declare something "clean" when it is born dead and unclean? Clearly, if infants did not have the condemnation of Adam's sin imputed to him or her, they could never die. The fact that they do die plainly shows their subjection to the penalty of sin, which is death. That is why it is said that no one can "see the Kingdom of heaven" unless they are born again. All are guilty of their sins, if not theirs own personally, then the sin of Adam which is not only imputed onto them, but which also results in their being born dead and depraved, "working iniquity" as soon as they are able.
This is why the nonsense about the "age of accountability" is the true lie, and why the children of believers have every right to be baptized, for they are not born innocent, but already subject to death due to their depravity and the sin of Adam.
Rom_5:13 (For until the law sin was in the world: but sin is not imputed when there is no law.
The point is: if you (or a baby) has no knowledge of the law (or natural law) there is no sin accounted to you (or a baby)...
Sprinkling a baby will do no more for the baby that it will do for your petunias when you sprinkle them...Actually the petunias will benefit more...
Sprinkling a baby will do no more for its soul than sprinkling an avowed muzlim, or hindu...
No one gets saved in the bible except that they first turn to Jesus, whether they get water baptized or not...