Sarang Church is one of the largest churches in South Korea. Reverend Jung Hyun Oh took on the mantle of Senior Pastor of that church in 2003. Oh showed a deep love for his people and led them with a pastoral philosophy that focused on the development of a "total" discipleship plan. This plan is pulled from the Greek word, "Teleios." Teleios holds much theological weight in that it is word used from completeness, maturity, and wholeness.

Oh, through years of mentoring and meditation upon the Word, called his church to adopt a philosophy that lays a foundation for a complete discipleship built on a biblical foundation. This discipleship philosophy is integrated through multiple generations and formats that invites the body of Christ into a communal relationship with God and with one another. Oh calls for a discipleship that is shared in prayer sessions, leadership gatherings, corporate worship, and in the home. Teleios disciple-making is the vehicle that paves the way for mature discipleship for all believers regardless of their circumstances.

The cover image features Rembrandt's Return of the Prodigal Son in the background, symbolizing the tears of Jesus' blood.