Saint Martyrs Isaac and Joseph, biological brothers, were born in the city of Theodosia. Their father was a noble Muslim, while their mother was a Christian who secretly raised her sons in the Christian faith. Upon reaching adulthood, the brothers decided to leave their father in order to freely profess their faith in the Lord Jesus Christ. They approached Emperor Nikephoros I with a request for relocation to Constantinople. After receiving permission, the brothers began to prepare for the journey, but were detained by the order of the emir of Theodosia. When asked about the reason for their relocation, they openly declared that they were Christians and were fleeing from the wicked. The emir, having gathered a council of nobles, issued a death sentence against them. At the place of execution, kneeling down, the saints offered a prayer to the Lord, after which the executioner beheaded them in the year 808. At night, a bright pillar of light descended upon the unburied bodies of the saints. Amazed by this sign, the Muslims asked the Christians of the city to bury the saints. A church was later built at their burial site, consecrated in the name of the Holy Trinity.
