The Bible records Jesus giving the disciples the Great Commission. In Acts 1:8 it is the last command given by Christ before His Ascension that “you will receive power when the Holy Spirit has come upon you, and you will be my witnesses in Jerusalem and in all Judea and Samaria, and to the end of the earth.” This is similar to Matthew 28:18-20 where Jesus tells the disciples:
“All authority in heaven and on earth has been given to me. Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age.”
The Great Commission was not just for the immediate disciples that He was speaking to but it is given to all believers. Today, the Great Commission is still being fulfilled by international missionary work, by local churches in actively seeking the lost in their community, in outreach activities and by believers witnessing for Jesus Christ to their next door neighbor. The Great Commission will not end until the consummation of the Kingdom of Heaven. That is, during the church age today, all believers are commanded to proclaim the gospel of Jesus Christ and to go into all the world, even if it starts next door.