Peter was proclaiming that Jesus appeared to him alive from the dead.
• The AD 30 Jerusalem church said this about Peter.
• The Corinthian church said this about Peter.
• Paul said this about Peter.
• Luke said this about Peter.
Paul (previously Saul of Tarsus) was proclaiming that Jesus appeared to him alive from the dead.
This full article analyzes these 4 evidences:
• In 1 Cor 9:1, Paul says “Have I not seen?”
• In 1 Cor 15:8f, Paul says “He appeared to me.”
• Acts 9, 22, 26 etc. says so
• In Gal 1:16, Paul says “revealed to me.”