Slight nitpickiness here, but...
Peter preached a coming kingdom.
Peter was sent to the Jews. His message was valid. Christ preached the same message to the same people.
Peter preached works for salvation.
Chapter and verse? Peter was an apostle to the Jews, not an accursed non-believer. He did not preach a works based salvation. Peter, like every Jew, Paul included, had issues with dropping the Law. For Paul I believe it was easier, as he had made the Law his salvation. Paul saw the sharp contrast and readily accepted putting it away. The others, though understanding what salvation was, and preaching that gospel accordingly, still hung on to practices that were habit. Peter liked his hamburgers too! This is why Paul "withstood him to the face." Peter was saying one thing and practicing another. He was acquiescing to the Judiazers - not promoting them.
Paul says eat all things.
Paul said all things were lawful to him, but that if eating meat caused his brother to offend, that he would eat no meat.
Peter preached you must be water baptized. Paul preached you do not need water baptism.
Peter was obedient to the great commission given by his Lord and Savior Jesus Christ. Paul practiced the very thing you say he did not preach. Here's an interesting point: as baptism has no salvific grace whatsoever, what then is the point? Why then was it so prominent in Jewish culture, but not so prominent in Gentile culture? Circumsion was the outward sign of the old covenant. Baptism is the outward sign of the new covenant. No grace. Just identification. Peter and Paul were in accord on this matter. Perhaps you should follow suit?
Peter preached sell all you have and God will take care of you. Paul preached if you do not work you do not eat.
Peter preached sell what you have and take care of your brothers and sisters in Christ. It is God Who provides for need, so why hoard treasures unto yourselves? Paul preached we must work, so that we might have that with which to give. Unity, yet again.
Peter preached the cross as a curse to Israel. Paul preached the curse removed.
The Law stated:
And if a man has committed a crime punishable by death and he is put to death, and you hang him on a tree, his body shall not remain all night on the tree, but you shall bury him the same day, for a hanged man is cursed by God. You shall not defile your land that the LORD your God is giving you for an inheritance.
Deuteronomy 21:22-23
Peter preached:
But Peter and the apostles answered, "We must obey God rather than men. The God of our fathers raised Jesus, whom you killed by hanging him on a tree. God exalted him at his right hand as Leader and Savior, to give repentance to Israel and forgiveness of sins. And we are witnesses to these things, and so is the Holy Spirit, whom God has given to those who obey him."
Acts 5:29-32
and again:
So Peter opened his mouth and said: "Truly I understand that God shows no partiality, but in every nation anyone who fears him and does what is right is acceptable to him. As for the word that he sent to Israel, preaching good news of peace through Jesus Christ (he is Lord of all), you yourselves know what happened throughout all Judea, beginning from Galilee after the baptism that John proclaimed: how God anointed Jesus of Nazareth with the Holy Spirit and with power. He went about doing good and healing all who were oppressed by the devil, for God was with him. And we are witnesses of all that he did both in the country of the Jews and in Jerusalem. They put him to death by hanging him on a tree, but God raised him on the third day and made him to appear, not to all the people but to us who had been chosen by God as witnesses, who ate and drank with him after he rose from the dead. And he commanded us to preach to the people and to testify that he is the one appointed by God to be judge of the living and the dead. To him all the prophets bear witness that everyone who believes in him receives forgiveness of sins through his name."
Acts 10:34-43
And to whom did Peter preach this message? Cornelius. A Gentile. As for Paul:
For all who rely on works of the law are under a curse; for it is written, "Cursed be everyone who does not abide by all things written in the Book of the Law, and do them." Now it is evident that no one is justified before God by the law, for "The righteous shall live by faith." But the law is not of faith, rather "The one who does them shall live by them." Christ redeemed us from the curse of the law by becoming a curse for us--for it is written, "Cursed is everyone who is hanged on a tree"-- so that in Christ Jesus the blessing of Abraham might come to the Gentiles, so that we might receive the promised Spirit through faith.
Galatians 3:10-14
Now I could be wrong, but it appears that Peter preached Jesus was hung on a tree for our sins, and
Paul preached that the very curse of being hung on a tree was one Christ took upon Himself to remove the curse of the law for us.
There are blanket statements being made ignorantly to support a very valid truth - Paul was the apostle to the Gentiles. But Paul was never sent to
be followed, rather to be an exemplary
follower:
For though you have countless guides in Christ, you do not have many fathers. For I became your father in Christ Jesus through the gospel. I urge you, then, be imitators of me. That is why I sent you Timothy, my beloved and faithful child in the Lord, to remind you of my ways in Christ, as I teach them everywhere in every church.
1 Corinthians 4:15-17
He pointed constantly to Christ, through his example and through God's word.
