Peter the Apostle, originally named Simon, was one of the twelve disciples of Jesus Christ. He is often considered the leader of the apostles and played a crucial role in the early Christian church. Peter is known for his strong faith and his willingness to spread the teachings of Jesus, even facing persecution for his beliefs. Peter is traditionally recognized as the first pope of the Roman Catholic Church. He is often depicted in art holding keys, symbolizing his role in the church and his authority. His life and teachings are documented in the New Testament, particularly in the books of Matthew, Mark, Luke, and John.