One of the most fascinating phases of mission study is the tracing of the lines along which the gospel spreads. This is true because it brings us into touch with the native Christian who is one of the greatest agencies for the spread of the gospel. As it was in the first century, so it is now--"they that were scattered abroad went everywhere preaching the gospel." The history of those Apostolic times repeats itself in every mission land. He who personally observes the work in Brazil or any other mission field will have a keener appreciation and understanding of the Acts of the Apostles written by Luke. The native Christians must either witness for their Lord or else betray Him. There is no middle ground. A large percentage of the churches in Brazil grew out of the fact that a believer moved into a community and began to tell the story of the love of Jesus to his neighbors. He may have entered this community by choice or may have been driven into it by persecution. However, that may be, the truth is that many a poor, despised, often persecuted believer, has started a movement in a community which gathered to itself a large company of believers, and formed the nucleus of another one of those most wonderful institutions in all the world--a church of Jesus Christ. When I had entered the First Baptist Church in Sao Paulo, Brazil, and stood for a moment looking about me, I heard someone exclaim, "Oh, there he is! There he is!" and presently I found myself locked in the affectionate embrace of an apparently very happy old woman. She was about seventy years of age. She was the janitress of the church. She had looked forward to our coming with joyful pleasure, and gave to us as hearty a welcome as did anyone in Brazil. Her name was Felicidade, which being translated means "Felicity." Several years ago she had come from Pernambuco, in which city and State she had labored with great success for many years in behalf of the gospel. When a girl of ten or twelve years of age she heard her father talk about a book he had seen in the court-house upon which the Judge had laid his hand as he administered the oath. She had the greatest desire to see this book. She was married in her thirteenth year and her husband died when she was eighteen. After his death she went from the country to the city of Pernambuco, where she met some members of the Congregational Church and was led by them to attend the services. She saw the Bible and heard a sermon preached from the text, "Blessed are they that hunger and thirst," and soon afterward she gave obedience to Jesus.