"Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world. Amen"
The Great Commission, as it is known, is broader than many Christians realize. First of all, it involves Christians being sent into all the world. "As my Father hath sent me," said Jesus to the disciples, "even so send I you" (John 20:21). Then, just before His return to heaven, He told them what they would do as they went, "Ye shall be witnesses unto me…unto the uttermost part of the earth." But how could they (or we) possibly do such a thing? "Ye shall receive power, after that the Holy Ghost is come upon you" (Acts 1:8), was His statement.