During the reign of St Constantine the Great, an explorer named Meropus set out to explore lands along the Red Sea, previously unknown to the Roman world. The expedition's ship was attacked by pirates and all the company killed except two young men named Frumentius and Edesius. They were sold into slavery in the court of the Ethiopian King of Axum, where they distinguished themselves so well that they became palace stewards and were able to obtain freedom of Christian worship for merchants trading in the Kingdom.   Eventually the young men returned to Roman territory, and Frumentius went to St Athanasius the Great of Alexandria to tell him of his travels and of the great thirst of the Ethiopian people for the Gospel of Christ. Saint Athanasius consecrated Frumentius as first Bishop of Abyssinia and sent him back to Axum to establish the Church in that kingdom.   Through his apostolic zeal, tireless travels, and miracles and healings, the holy Bishop was able convert many pagans and establish many churches in Ethiopia, though the Kingdom did not become officially Christian until the sixth century. Saint Frumentius reposed in peace in his adopted country, and his relics worked many miracles.   The Church of Ethiopia traces its origin to the apostolic work of the Ethiopian eunuch baptized by the Apostle Philip in the Book of Acts, who "went on his way rejoicing" to Ethiopia and first proclaimed the Gospel there. Thus, it seems there was already a Christian presence in the country when Frumentius arrived: this may be the source of the statement in his biography that he found the Ethiopian people thirsty for the Good News.