Early Christianity refers to the period of the Christian faith from its origins in the 1st century AD until the early 4th century. It began with the teachings of Jesus Christ and was spread by his disciples, including Paul of Tarsus. Early Christians faced persecution but continued to grow in number and influence, establishing communities and sharing their beliefs. During this time, key texts, such as the New Testament, were written, and foundational doctrines were developed. The early church held gatherings for worship and fellowship, often in private homes, as they sought to live out the teachings of Jesus and spread the message of salvation.