In 1912, medical missionary Dr William Leslie went to live and minister to tribal people in a remote corner of the Congo. After 17 years he returned to the USA discouraged, believing he had failed to make an impact for Christ. He died nine years later. In 2010, a team from World Ministries made a shocking and sensational discovery. They found a network of reproducing churches hidden like glittering diamonds in the dense jungle across the Kwilu River from Vanga, where Dr Leslie had been stationed. Each village had its own gospel choir, although they wouldn’t call it that. They wrote their own songs and would have sing-offs from village to village. There were eight churches, scattered across 34 miles - even a 1,000-seat stone ‘cathedral’ in one village, which got so crowded that a church-planting movement began in the surrounding villages.