The feast of the Holy Apostles Peter and Paul indicates the lot of the Holy Apostles here on earth and reveals the glory that followed it. The earthly lot of the Apostles was to go around the earth preaching of the Heavenly Kingdom, in this emulating Christ by their poverty, endurance of dishonor and sufferings, by their love for the children of the Heavenly Father, their inward torments of childbirth over those who heeded their preaching and their grief over those who paid no heed to their words and finally, by offering themselves as a sacrifice. However, the culmination of their earthly life is the beginning of their heavenly glory. Their end is for them a dissolving of earthly ties and an ascent to Christ, Whom they loved, in order to remain eternally with Him (Phil. 1:23).
St. John of Shanghai and San Francisco
“About the Apostles Peter and Paul”