Our task to complete is not just to go, learn the language, share the Gospel and then leave. Our task is to help build up, hopefully and prayerfully, the brand new believers that have submitted themselves under Christ's kingship. We want to see them sustained by the Holy Spirit, bearing fruit, established in leadership and reproducing what God has taught them among their neighbors. Our task is accomplished by translating the Bible in their heart language, helping to disciple young believers and developing elders and deacons for the responsibility of equipping the saints for the work of the ministry. We will then, at that point, be able to transition out of the tribe for their health and prosperous future as the Church. 

"What you have heard from me in the presence of many witnesses entrust to faithful men who will be able to teach others also.." 2 Timothy 2:2