Peter and Paul preached differently on Baptisms and the Holy Ghost.
Wrong. Both Peter and Paul preached one baptism for the forgiveness of sins. Peter messed up with his behavior, and Paul scolded him for it, BUT THEY HAD NO DOCTRINAL DIFFERENCES.
Baptisms:
The twelve preached salvation upon baptism (Acts 2:38 Mark 16:16)
Paul was not sent to baptize (1 Corinthians 1:17)
A false dichotomy. How does that prove Paul did NOT baptize??? Of course he did. Preaching was the priority because baptism necessarily followed.
The Holy Ghost:
The twelve preached the receiving of the Holy Ghost upon baptism (Acts 2:38).
38 Peter said to them, “Repent, and each one of you be baptized in the name of Jesus Christ for the forgiveness of your sins,
and you will receive the gift of the Holy Ghost. The soul
will receive the Holy Ghost upon baptism, but no time line is given. Manifestations may be immediate, but most of the time it is not.
Acts 8:14-17 – the people of Samaria were baptized in Christ, but did not receive
the fullness of the Spirit until they were confirmed by the elders. Confirmation is a sacrament that Jesus Christ instituted within His Catholic Church to further strengthen those who have reached adulthood.
Acts 19:5-6 – the people of Ephesus were baptized in Christ, but Paul laid hands on them to seal them with the Holy Spirit. This sealing refers to the sacrament of confirmation.
Paul preached that the Holy Ghost was received upon belief (Ephesians 1:13).
That is not disputed. Being sealed is not baptism. Making them one and the same at all times is not biblical. Water baptism is NORMATIVE, not absolute. There is baptism of desire, e.i. the Thief on the Cross, and the baptism of blood, those Christians who were martyred before they had time to be baptized. It's still one baptism for the remission of sins. God is not a legalist.
John 3:3,5 – Jesus says, “Truly, truly, unless one is born of water
and the Spirit, he cannot enter the kingdom of God.” When Jesus said “water
and the Spirit,” He was referring to baptism (which requires the use of water,
and the work of the Spirit). Here, Jesus clearly defines "born again". He does not say, "unless he has an emotional/moral upheaval at an altar call, he cannot enter the kingdom of God." As important and valuable as it is, it is not "born again" according to Jesus' clear unconditional definition.
The Greek word for the phrase “born again” is “anothen” which literally means “begotten from above.” See, for example, John 3:31 where “anothen” is so used. Baptism brings about salvation, not just a symbolism of our salvation.
John 3:22 – after teaching on baptism, John says Jesus and the disciples did what? They went into Judea where the disciples baptized. Jesus’ teaching about being reborn by water
and the Spirit is in the context of baptism.
John 4:1 – here is another reference to baptism which naturally flows from Jesus’ baptismal teaching in John 3:3-5.
Acts 8:36 – the eunuch recognizes the necessity of water for his baptism.
Water and baptism are never separated in the Scriptures.
Isaiah 44:3 – the Lord pours out His water and His Spirit. Water and the Spirit are linked to baptism.
The Bible never separates them.
Ezek. 36:25-27 – the Lord promises He will sprinkle us with water to cleanse us from sin and give us a new heart and spirit. Paul refers to this verse in Heb. 10:22. The teaching of Ezekiel foreshadows the salvific nature of Christian baptism instituted by Jesus and taught in John 3:5, Titus 3:5, 1 Peter 3:21 and Acts 22:16.
Peter and Paul did not preach different baptisms.