In the mid-1980s, 24% of world’s population (1.8 billion people) had little or no Gospel access. Today, that figure has grown to 29% (2.1 billion people). Two interchangeable terms, while technically different, essentially define this population:

Unreached People Groups (UPGs) — less than 2% evangelical Christians (Joshua Project).

Least Evangelized Peoples (LEPs) – 　with little or no Gospel access per a multiple-factor list (World Christian Database).

Tragically, only about 3% of global missionaries serve this 29%. Christ-followers should be outraged by this spiritual injustice. That Jesus’ command to make disciples of all ethne is unfulfilled is disobedience. Doing more of the same activities expecting different results is futile and irresponsible.

Mission revolution
A holy urgency has caused many to re-study Scripture as a strategy manual—and has as a result revolutionized results among some UPGs. Sound motives fuel these efforts, including a deep love for Jesus; a joyful desire for all to have the chance to love and serve him; a holy concern to bring spiritual justice; and a commitment to obey Jesus’ command. The resulting radical methodological changes have resulted in amazing results reflected in the quantity and quality of disciples and churches.

Church-planting movements
Globally, ‘Book of Acts’-type movements (called ‘Church Planting Movements’ below) have recently emerged, often among the ‘hardest’ peoples to reach. The reality of these movements should not be skeptically or lightly dismissed. These exciting, transformational results—with millions of new believers and churches in hard places—should receive greater emphasis from those committed to bringing Jesus’ gospel to all peoples.

Source: Disciple-making Movements as a Biblical, Holistic, and Radical Solution – Beyond