圣彼得 (Apostle Peter) was one of the twelve apostles of Jesus Christ and is often considered the leader of the apostles. Originally a fisherman named Simon, he was called by Jesus to follow him and later given the name Peter, meaning "rock." He played a crucial role in the early Christian church and is traditionally regarded as the first pope of Rome. Peter is known for his strong faith and leadership, as well as his moments of doubt, such as when he denied knowing Jesus three times before the crucifixion. He is often depicted in art holding keys, symbolizing his role in the Kingdom of Heaven. His teachings and martyrdom have had a lasting impact on Christianity.