Answer :

Paul of Tarsus taught the gospel of Christ to the first-century world.

The correct option is: Paul of Tarsus

Paul of Tarsus is called the "Apostle of the Gentiles", the "Apostle of the nations", or simply "the Apostle". Founder of Christian communities, evangelizer in several of the most important urban centers of the Roman Empire such as Antioch, Corinth, Ephesus and Rome, and editor of some of the first Christian canonical writings -including the oldest known, the First epistle to the Thessalonians -, Paul constitutes a first-order personality of primitive Christianity, and one of the most influential figures in the entire history of Christianity.