Muslims are the largest unreached people on the planet. Over 37,000 die without the gospel every day. Islam enslaves almost 2 billion followers most of whom have never heard the gospel. Now, more and more nations are seeing a sharp increase in the number of Muslims living around them because of immigration. Mosques are now becoming common even in European and American cities. Islam is the biggest challenge for the global church today both on the mission field and in your local neighborhood.