Thaddeus of Edessa festival, and heard the preachings of John the Baptist (St. John the Forerunner). After being baptized by John the Baptist in the Jordan River, he remained in Palestine. He later met and became a follower of Jesus. He was chosen to be one of the seventy disciples, whom Jesus sent in pairs to preach in the cities and places. After Pentecost and the ascension of Jesus, Thaddeus started preaching the gospel in Mesopotamia, Syria and Persia. Thaddaeus ordained priests in Edessa, converted many to Christianity and built up the church there. He also went to Beirut to preach and founded
St. John the Baptist Cathedral, San Juan the former largest church in the province. The first cathedral was built by the Society of Jesus in 1712. In 1944, an earthquake struck the province of St John. The Cathedral was one of many buildings damaged. A new cathedral was completed in the late 1970s St. John the Baptist Cathedral, San Juan The St. John the Baptist Cathedral () also called San Juan Cathedral It is the mother church of the city of San Juan, in the South American country of Argentina, which was dedicated to St John the Baptist. It is currently one of the most modern cathedrals