The "10/40 Window" is a special view of our world. It stretches from 10 degrees north to 40 degrees north of the equator, and travels from North Africa to East Asia. This special view is important to Christians because of what we see through this window.
"The harvest is plentiful but the workers are few. Ask the Lord of the harvest, therefore, to send out workers into his harvest field (Matthew 9:37-9:38)ˇ±