Does that baptism require water? Again, it's a yes / no question that I am again asking.
If the answer is no - no water, then you are contrary to the vast majority of "Bible only" believers. And that's fine. It's a case in point of the fragmentation and confusion that arises from every believer with his Bible as ultimate authority.
If the answer is yes, please explain why Peter's answers to the question "What must we do to be saved" are applied to the Gentiles (under the "diapensation of grace") - "Repent and be baptized...."
"Ye men of Israel hear these words; Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs.."(Acts 2;22).
When they are pricked in their hearts and ask what they should do Peter replies "Then Peter said unto them, Repent, and be baptized every one of you,in the name of Jesus Christ, for the remission of sins, and ye shall receive the gift of the Holy Ghost." (Acts 2:38).
The dispensation of grace did not begin until Paul was saved.
"If ye have heard of the Dispensation of the grace of God which is given ME to you-ward: how that BY REVELATION He made known unto ME, the mystery..."(Eph. 3:2,3,5,6,9).
Paul is not saved until Acts 9, so the Dispensation of the Grace of God could NOT have begun before then.
Peter was preaching the Gospel of the Kingdom on the day of Pentecost. Exactly what Jesus Christ commanded him to do. Water baptism for remission of sins was integral to the Gospel of the Kingdom.
If i may answer, water baptism - with the mode being into the water best corresponding to the meaning of “baptismo “and supported by the texts, (Mt. 3:16; Acts 8:38) - is what is commanded. (Mt. 28:19, etc.) And which requires repentance and faith, (Acts 2:38; 8:36) and thus infant baptism is never exampled, though some see it under the rubric of household conversions. (Acts 16:33)
However, baptism is no more a work that merits justification than moving one’s lips in praying a “sinners prayer” is, and in fact, baptism is confessing Jesis is Lord by body language.
However, this does not mean one cannot be born again before they are baptized, as God recognizes what manner of faith is in the heart before it is expressed in baptism, and Cornelius and company received the same Holy Spirit that apostles had, before any water touched them. (Acts 10:43-47; 15:7-9) Their confession prior to that was that of magnifying God, as did the apostles at Pentecost. (Acts 2:11), while Rome herself recognizes “baptism of desire.”