The study explores processes of faith journeys of the first generation of Christian North Korean defectors in South Korea. For the purposes, in–depth interviews were conducted with 13 North Korean defectors having Christian faith over at least 3 years, and perceiving themselves as committed Christians. The verbatim records were analyzed using Strauss and Corbin’s grounded theory(1998) approach. In result, 20 categories and 96 subcategories emerged from the data, and also paradigm model was utilized for a data analysis. The central phenomenon is ‘an irresistible encounter with God as being,’ which accepted God personally. After that, the consequences showed that they keep developing their faith and maturing their relationship with God, and they accept their identity as North Korean defectors and callings from God. Through their journeys of faith, the study suggests lessons for churches to be learned in South Korea and considerations necessarily to serve them and prepare for reunification.