Just had this thought while sitting in the bathroom…
The world population right now is 6,757,510,195. 
If one person shares the Gospel with 20 people in his lifetime, and each of those 20 people share with another 20 people, and so on…then after 8 cycles, 25,600,000,000 people will have heard the Gospel.
If one person shares the Gospel with 10 people in his lifetime, and each of those 10 people share with another 10 people, and so on…then after 9 cycles, 10,000,000,000 people will have heard the Gospel.
If one person shares the Gospel with 5 people in his lifetime, and each of those 5 people share with another 5 people, and so on…then after 15 cycles, 30,517,578,125 people will have heard the Gospel.
If one person shares the Gospel with 1 person in his lifetime, and each person shares with another person, and so on…then after 33 cycles, 8,589,934,592 people will have heard the Gospel.
All these numbers are well over the current estimated world population. Isn’t this amazing?
Everyone in the world can hear the message of Jesus Christ (pretty quickly too) if every Christian just did his small part.
It is possible.
