The Church marks her origins from when Jesus chose apostles and began his public ministry, continuing on after his passion and ascension under the leadership of the Apostle Peter and his successors.
Jesus declared that he was the fulfillment of the precepts of Judaism. Initially apocalyptic in outlook, the Early Church drew on a variety of sources—Jewish ideas, Greek philosophy, etc.—to explain the mission of the Church as both a visible sign of the Kingdom of God and the path of salvation for all humanity.
Jesus founded the Church, which recognizes the Apostle Peter as his representative on earth. As the original apostles established missionary churches, the concept of apostolic succession developed into a system of bishops tracing their origins back as custodians and defenders of the deposit of faith.
The writings of the apostle Paul to local churches were the beginnings of New Testament scriptures. Shortly thereafter, eyewitness accounts of Jesus' life were set down as well. The canon of scriptures was determined over time authoritatively by various Church councils.
Through various Councils, the most recent being the Second Vatican Council, the Roman Catholic Church continues to proclaim, and develop more fully, the teachings of her founder.