For the last few years, researchers have credited the underground church in Iran as the fastest growing Christian church in the world. It has unique characteristics that defy comparison with churches in America and Europe, and in the opinion of some who know it well, the church in the West could learn by studying it.

“The fastest growing church in the world has taken root in one of the most unexpected and radicalized nations on earth,” according to “Sheep Among Wolves,” the outstanding two-hour documentary about the revival that has taken place inside Iran. “The Iranian awakening is a rapidly reproducing discipleship movement that owns no property or buildings, has no central leadership, and is predominantly led by women.”

The documentary was produced by Frontier Alliance International (FAI), which supports disciple-making teams targeting the “unreached” and “unengaged” within the 10/40 Window.

There is a mass exodus leaving Islam for Christianity within Iran, according to FAI.

“What if I told you Islam is dead?” one unidentified Iranian church leader says on the film. “What if I told you the mosques are empty inside Iran? What if I told you no one follows Islam inside of Iran? Would you believe me? This is exactly what is happening inside of Iran. God is moving powerfully inside of Iran.”