527 of Indonesia's 784 people groups do not have even Bible portions available in their primary language. The largest of these is the Betawi, 7,000,000.
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Missions

 The Great Commission:

 And Jesus came and said to them, “All authority in heaven and on earth has been given to me.  Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age.” – Matthew 28:18 – 20 (ESV)

 Missions