China:
It is estimated that 20 million Chinese lost their lives during Mao’s Cultural Revolution. Christians stood firm in what was probably the most widespread and harsh persecution the Church has ever experienced. The persecution purified and indigenized the Church. Since 1977 the growth of the Church in China has no parallels in history. Researchers estimate that there were 3075 million Christians by 1990. Mao Zedong unwittingly became the greatest evangelist in history.

El Salvador.
The 12-year civil war, earthquakes, and the collapse of the price of coffee, the nation’s main export, impoverished the nation. Over 80% live in dire poverty. An astonishing spiritual harvest has been gathered from all strata of society in the midst of the hate and bitterness of war. In 1960 evangelicals were 2.3% of the population, but today are around 20%.

Ethiopia:
Ethiopia is in a state of shock. Her population struggles with the trauma of millions of deaths through repression, famine, and war. Two great waves of violent persecution refined and purified the Church, but there were many martyrs. There have been millions coming to Christ. Protestants were fewer than 0.8% of the population in 1960, but by 1990 this may have become 13% of the population.

J.P. Moreland & William Lane Craig, Philosophical Foundations for a Christian Worldview (Downers Grove, IL: IVP Academic, 2003), 545.