Apostle Paul, originally known as Saul of Tarsus, is a significant figure in Christianity who is often considered to be one of the most important figures in the development of early Christianity. He is traditionally believed to be the author of several New Testament epistles, which have had a profound influence on Christian theology and practice. The term "Apostle" (from the Greek apostolos, meaning "one sent forth") signifies his role as a missionary and teacher, spreading the teachings of Jesus Christ to the Gentiles. In Hebrew, he is known as Shaul HaShaliach (שאול השליח). In Arabic, he is referred to as Paulus (بولس). Paul's conversion to Christianity, as recounted in the Acts of the Apostles, is a pivotal moment in the New Testament, marking his transformation from a persecutor of Christians to a devoted follower of Jesus. His missionary journeys, as described in the New Testament, took him across the Mediterranean world, establishing Christian communities and writing letters to these communities, which later became part of the New Testament canon. Paul's teachings emphasized the universality of the Christian message, arguing that faith in Jesus Christ, rather than adherence to Jewish law, was the path to salvation, a perspective that significantly shaped the development of Christian theology.