I can only say that while there isnt a specific infant being baptized in the bible, there are cases of entire households. Households wouldnt be like my household back then. It would have included many people, and there were most likely infants in those houses. If there were not (of course the bible doesnt say), then it still does not take away the fact that it makes perfect sense for christian parents to baptize their children.
1. There are no examples in the bible of parents baptizing their children.
2. There is no example in the bible of a "household" being baptized where that SAME "household" is not ALSO said to "have the Word of the Lord spoken TO Them" (Acts 16:32) in the way of speaking to an adult,
In Acts 10 --- the household hears and then begins speaking in tongues - and Peter argues that they who are speaking in tongues should be baptized since clearly the Holy Spirit has accepted them.
Clearly - not an action infants were engaged in.
It all depends on what you see baptism as. If you see it as an act of obedience towards God, then of course and infant cannot participate in that.
That is the form it takes in the Command Christ gives in Matt 28 - preach the Gospel - Make Disciples, Teach what I have commanded you - Baptize them.
It is also the form we see in Acts 2 where the command is "REPENT and be baptized"
Without an explicit example of "no teaching, no repentance" and just the sacramental waters applied to an infant (the very thing missing from scripture) we have not room for infant baptism.
Infants of course cannot repent, but the commands to repent were given to adult believers--then their households were baptized.
There is not even one example in scripture of someone who did not repent - getting baptized.
Given the ceremonial washings that were going on at that time THAT INCLUDED INFANTS, it would have made much more sense that infants were to be included in this new baptism. We have evidence from the earliest of Christianity that infants were in fact baptized and while other heresies were fought against very early on, we have no evidence of any fight for believers only baptism until the 16th century! This tells me that this is how it was always done--and given what the bible says about baptism, it makes sense.
Catholic Digest did a report on that - showing that infant baptism was not being practiced by the early church. In fact the church under persecution developed a highly complex and involved ritual for baptism - that could not possibly have accomodated infants. So if we are looking for early history to tell us something - the evidence runs entirely contrary to infant baptism.
ANd yes, sometimes it is by osmosis.
There is no salvation by osmosis in scripture.
As Romans 10 points out -- first you believe then you confess "resulting in salvation".
Paul does not say "it only works like that sometimes".
in Christ,
Bob