I also know that infant salvation is a tremendous revelation of Gods grace.
I just do not think Scripture warrants a dogmatic understanding of that issue.
But you are being dogmatic to the point that you are changing the truth that we know about justification to try to make it fit the case of infants, when you have no Scriptural warrant to do so.
You are abandoning the truth of justification by faith if you make exceptions!
Either we are justified before we have faith or after, but it can't be both or we have 2 gospels to preach. And many have already demonmstrated that justification follows faith.
Phillip