Jesus commands His disciples to go and make more disciples
Matthew 28:18–20 (ASV)
18And Jesus came to them and spake unto them, saying, All authority hath been given unto me in heaven and on earth. 19Go ye 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: 20teaching them to observe all things whatsoever I commanded you: and lo, I am with you always, even unto the end of the world.
Amy Carmichael heard the "inescapable, irrestible" call of God to go to the heathens who have not heard of Jesus. By prayer, she communicated her decision to her mother, who graciously offered her up to God.
A new convert gives a clarion call for the Gospel asking why he hasn't heard the good news earlier and wondering why it hasn't reached many others.
Dr. John Van Ness was denied a visa to go preach in Saudi Arabia, but he will not accept the rejection as he believed God wanted him there. So armed with the words of Jesus to "go into all the world and preach the Gospel to every creature", he boarded a ship to the gulf nation with the Bible as his visa.
Upon his conversion and encounter with Christ, Charles Finney went out under conviction to preach the gospel and bring men to Christ and this he did with great success, by the grace of God, from that day onwards.
Richard Wurmbrand walked up to a Russian lady officer to talk to her about Jesus Christ and invites her to their home, where he led her to the Messiah after listening to her astonishing story.
Inspired by a great cloud of modern missionary witnesses, Christiana desired to be a missionary to those who had never heard of Jesus before.
Reporting about the revival in Ping Yang, two evangelists from Manchuria found that the people had become 'walking chapels' as the preached the gospel wherever they went. Traders were doing same and one even pioneered a christian community, even students were not left out; they went about telling men daily about Jesus.