Here is the preaching of the apostle Peter and the apostle Paul which shows they did not always preach the same thing.
On forgiveness:
Peter preached forgiveness for national Israel at the coming of Christ (Acts 3:19).
Peter and the twelve taught in order to be forgiven, they had to forgive others (Matthew 6:14-15).
Paul preached forgiveness now in Christ (Colossians 1:14).
In regard to destination:
The twelve were appointed to judge the twelve tribes in the Davidic kingdom on earth (Luke 22:30). The twelve preached that believing Israel would be given the earthly kingdom (Luke 12:32).
Paul preached the heavenly places for the body of Christ (Ephesians 2:6).
But here are the similarities between the twelve and Paul.
On the name of Jesus:
Peter preached the name of Jesus for salvation not the cross (John 1:12 Acts 4:12).
Paul preached the name of Jesus (Acts 9:29 Romans 1:5 1 Corinthians 1:2).
On Jesus the Christ, the Son of God:
Peter preached Jesus as Christ, the Son of God (Matthew 16:16).
Paul preached Jesus as Christ, the Son of God (2 Corinthians 1:19).
On the gospel of Christ:
The twelve preached the gospel of Christ (Mark 1:1).
Paul preached the gospel of Christ (Romans 1:16) but with further revelations made known to him by the Lord Jesus Christ ( 2 Corinthians 12:7 Ephesians 3:2-7).
On forgiveness:
Peter preached forgiveness for national Israel at the coming of Christ (Acts 3:19).
Peter and the twelve taught in order to be forgiven, they had to forgive others (Matthew 6:14-15).
Paul preached forgiveness now in Christ (Colossians 1:14).
In regard to destination:
The twelve were appointed to judge the twelve tribes in the Davidic kingdom on earth (Luke 22:30). The twelve preached that believing Israel would be given the earthly kingdom (Luke 12:32).
Paul preached the heavenly places for the body of Christ (Ephesians 2:6).
But here are the similarities between the twelve and Paul.
On the name of Jesus:
Peter preached the name of Jesus for salvation not the cross (John 1:12 Acts 4:12).
Paul preached the name of Jesus (Acts 9:29 Romans 1:5 1 Corinthians 1:2).
On Jesus the Christ, the Son of God:
Peter preached Jesus as Christ, the Son of God (Matthew 16:16).
Paul preached Jesus as Christ, the Son of God (2 Corinthians 1:19).
On the gospel of Christ:
The twelve preached the gospel of Christ (Mark 1:1).
Paul preached the gospel of Christ (Romans 1:16) but with further revelations made known to him by the Lord Jesus Christ ( 2 Corinthians 12:7 Ephesians 3:2-7).