Portal:Christianity/Introduction
Christianity is a monotheistic religion based on the life and teachings of Jesus of Nazareth as presented in the New Testament writings of his early followers. It is the world's largest religion, with an estimated 2.1 billion adherents, or about one-third of the total world population. It shares with Judaism the Hebrew Scriptures (called the Old Testament by Christians), and is sometimes called an Abrahamic religion, along with Judaism and Islam.
The names "Christian" and hence "Christianity" are first attested in Acts 11:26, "For a whole year they met with the church and taught a great many people. And in Antioch the disciples were first called Christians (Gr. χριστιανους)".