During the time of Our Lord Jesus Christ here on earth, He knew that He will suffer and die on the cross. So He ordained His Apostles as His successors to pass on His teachings. As He built His Church upon Saint Peter, He also ordained him as the First Pope to lead the other apostles and disciples before He ascended into Heaven. Saint Peter and the Apostles began their ministry after the descent of the Holy Spirit when the Blessed Virgin Mary gather them in the Cenacle. The Apostles traveled to different places to spread the Gospel and baptized the believers. The Apostles were succeeded by their own disciples and this was the beginning of what we know today as The Apostolic Succession.