Church Growth International (CGI), an international church growth research organization founded by the late Rev. Cho Yong-gi, will hold a four-day conference in Seoul starting Wednesday to mark its 50th anniversary, bringing together church leaders from around 50 countries. The 2026 CGI 50th Anniversary Conference, running Oct. 28 to 31, is hosted by Yoido Full Gospel Church and organized by CGI. It will take place at the church’s main sanctuary in Seoul, Jamsil Students’ Gymnasium and Osanri Choi Jashil Memorial Prayer Mountain in Paju, Gyeonggi Province. Organizers expect about 7,000 registered participants, including 3,000 from overseas and 4,000 from Korea. Under the theme “The Holy Spirit Across Generations,” the gathering will examine how churches can pass on their faith and ministry experience to the next generation while responding to a changing social and technological environment. Lee Young-hoon, senior pastor of Yoido Full Gospel Church and chairman of CGI, identified leadership succession and the Christian response to the age of artificial intelligence as key issues.