You have a problem with this Hopeful, due to your last sentence.No, there are not.
They can't confess and repent of sin, neither can they commit sin to repent of? (1 John 1:9)
What sins are being washed away by water baptism in the name of Jesus Christ for the remission of past sins? (Acts 2:38)
Baptism must be a choice for it to actually kill the old man of sin and allow the new man to be raised with Christ to walk in newness of life. (Rom 6:4-6)
The "promise" was to all men world wide, present and future.
But there are conditions babies and children cannot meet.
You follow a doctrine based on suppositions.
I am not willing to discard or twist scripture in order to recruite children into a false teachings mill.
I will be content to follow what is written in the bible.
What did people do before there was a bible?
They learned from their elders - until someone decided to put everything down in writing, maybe it was Moses. Maybe there was more than one writer, we can't know for sure. But God manages to get His message out to us, one way or another.
The persons that came directly after Jesus knew what He taught.
John baptized for the forgiveness of sins, but one would come after him that would baptize with the Holy Spirit and fire.
We baptize in the name of the Father, the Son, and the Holy Spirit, as Jesus told us to do in Matthew 28:19.
Babies are welcomed into the Christian community and the original sin of Adam is washed away from their soul.
It is then UP TO THEM, at a later time, to decide if they wish to empower the Holy Spirit or not.