The New Testament features several key figures who played significant roles in the early Christian church. Among them are the apostles, such as Peter, John, and Paul, who spread the teachings of Jesus Christ and established communities of believers. Each apostle contributed uniquely to the growth of Christianity through their missionary work and writings. Other important figures include Mary, the mother of Jesus, who is venerated for her role in the birth of the Messiah, and Judas Iscariot, known for betraying Jesus. These individuals, along with many others, shaped the narrative and teachings found in the New Testament.