Go therefore and make disciples of all the nations, baptizing them into the name of the Father and of the son and of the Holy Spirit; teaching them to observe all things whatever I commanded you: and yes, I am with you always, even to the end of the world. (Matthew 28:19-20)
 
And he said to them, Go into all the world, and preach the gospel to the whole creation. He who believes and is baptized shall be saved; but he who disbelieves shall be condemned. (Mark 16:15-16)
 
And that repentance and forgiveness of sins should be preached in his name to all the nations, beginning from Jerusalem. (Luke 24:47) (for the example see Acts 2:38)