21 August / 3 September
One of the Seventy, he was not that Thaddaeus who was one of the Twelve. St Thaddaeus first saw and heard John the Baptist, and then saw the Lord Jesus and followed Him. The Lord included him among His seventy, lesser apostles, whom He sent two and two before His face (Luke 10:1). After His glorious Resurrection and Ascension, the Lord sent Thaddaeus to Edessa, Thaddaeus's birthplace, in fulfilment of His promise to Avgar, which He made when He sent him the napkin with the imprint of His face. By kissing this napkin, Avgar was healed of his leprosy, though not entirely; a little of the leprosy remained on his face. When St Thaddaeus visited Avgar, the latter received him with great joy. Christ's Apostle instructed him in the true Faith and then baptised him. When the baptised Avgar came up out of the water, the remaining leprosy fell from him and he was completely healed. Glorifying God, Prince Avgar desired that his people should come to the knowledge of the true God and glorify Him. The prince called together all the citizens of Edessa before the holy Apostle Thaddaeus, to hear him preach about Christ. Hearing the Apostle's words and seeing their miraculously-healed prince, the people cast away their idols and their unclean living, embraced the Christian faith and were baptised, and the city of Edessa became resplendent with the Christian faith. Prince Avgar brought much gold and offered it to the Apostle, but Thaddaeus said to him: 'Having abandoned my own, do I accept another's?' St Thaddaeus preached the Gospel throughout Syria and Phoenicia, and entered into rest in the Lord in the Phoenician city of Beirut..