Did peter teach forgiveness of sin is applied through water baptism in acts 2?
I assume you are asking me what I believe about this passage.
Peter taught "Repent and be baptised".
Acts 2:38
"Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit."
And the obvious thing is so we can be forgiven of our sins, which is then sealed with the Holy Spirit.
Now some churches extend this to infant baptism, confirmation etc. which I do not follow.
Some think faith is not relevant before the age of responsibility.
Interestingly Paul talks about children being holy through the faith on one of their believing parents,
which implies they are saved up to the age of responsibility. He never went so far as to declare them saved
in the sense of the in dwelling Holy Spirit, but this creates a dilemma of is their salvation lost if they come
of age and do not express their personal faith?
1 Cor 7:14
For the unbelieving husband has been sanctified through his wife, and the unbelieving wife has been sanctified through her believing husband. Otherwise your children would be unclean, but as it is, they are holy