Five key scriptures in the New Testament about evangelism:
Matt. 28:18-20 “All authority in heaven and on earth has been given to me. Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age”
Mark 16:15-16 He said to them, “Go into all the world and preach the good news to all creation. Whoever believes and is baptized will be saved, but whoever does not believe will be condemned.
Luke 24:46-48 He told them, “This is what is written: The Christ will suffer and rise from the dead on the third day, 47and repentance and forgiveness of sins will be preached in his name to all nations, beginning at Jerusalem. 48You are witnesses of these things. Luke 24:46-48;
John 20:21 Again Jesus said, “Peace be with you! As the Father has sent me, I am sending you.”
Acts 1:8 But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth.” Acts 1:8