St. Peter, bishop of Alexandria, was beheaded on November 25, 311, during Maximinus Daia's persecution. He was a great bishop, famous for wisdom and holiness; "a model of charity and zeal, severe towards himself, merciful to sinners, a divine model of the Christian teacher," says Eusebius.
While in prison some priests pleaded for him with Arius, whom he had condemned. The action was reported to Peter; he replied that Jesus had appeared to him that very night with a torn garment, and when he sought an explanation, the Lord answered, "Arius has torn asunder My garment which is My Church." Peter's foremost virtue was perseverance; once he had made a decision he never vacillated. He is known as "the last martyr" of the Diocletian persecution.
Excerpted from The Church's Year of Grace, Pius Parsch.