Yoido Full Gospel Church is a Pentecostal church affiliated with the Assemblies of God on Yeouido (Yoi Island) in Seoul, South Korea. With about 1,000,000 members (2007), it is the largest Pentecostal Christian congregation in South Korea, and the world. Founded and led by David Yonggi Cho since 1958.
The Yoido Full Gospel Church was founded by Pastor David Yonggi Cho and his mother-in-law, Choi Ja-shil (최자실), both Assemblies of God pastors. On May 15, 1958, a worship service was held in the home of Choi Ja-shil. Apart from the two pastors, only Choi Ja-shil's three daughters (one of whom later married David Yungi Cho) and one elderly woman, who had come in to escape from the rain, attended the first service. The two pastors began a vigorous campaign of knocking on doors, providing spiritual and humanitarian help to the poor, and praying for the sick. Within months, the church had grown to fifty members, too many to accommodate in Choi Ja-shil's living room. Worship services were accordingly moved to a tent pitched in her backyard. As the church continued to grow over the following months and years, the church outgrew one tent after another.
Pastor Cho began preaching on the Three-Fold Blessing (the blessing of the spirit, soul, and body), proclaiming that physical health and financial prosperity are as much a part of God's will for Christians as the salvation of the soul. Inspired by his message of hope and monetary wealth, many previously uncommitted people joined the church, and by the beginning of 1961, membership had grown to a thousand. Having grown too large for its tent, the church purchased its first plot of land, at Seodaemun (서대문).