The years following Jesus until the death of the last of the Twelve Apostles, the Christian Church came fully into being on Pentecost when, according to scriptural accounts, the apostles received the Holy Spirit and emerged from hiding following the death and resurrection of Jesus to preach and spread his message. The apostolic period produced writings attributed to the direct followers of Jesus Christ and is traditionally associated with the apostles and apostolic times.
The period 200 BC to 200 CE was a time of history-making changes in Jewish culture and religious and political philosophy. It also harbors the beginnings of the development of Christian philosophy, culture and beliefs. For these reasons events of that period still exerts considerable influence on large segments of Western philosophy and culture today. That is what makes it such an interesting period to study.