The Church, particularly in the West, seems to have lost the key to how discipleship is achieved. The true meaning of discipleship has been misunderstood many times in church history, particularly in understanding the Great Commission. While some believe discipleship and evangelism are separate activities, the original Greek text reveals that making disciples happens through preaching the Gospel taught with depth and substance. The power of transformation comes not because of programmes and human genius, but through the power of the Gospel itself - this is the real 'missing key' that Jesus gave His church. Just as a missing key contributed to the Titanic's fate, having the wrong interpretation of discipleship can lead the Church astray from its primary mission.