I think Christian missionaries should live among the people exhibiting their Christianity in their daily lives. If the people see something in their lives that is missing in their own lives they will ask about it, which gives the missionary permission to tell them about their faith.
The process the early followers of Jesus went through that resulted in the Church of Jesus Christ is fairly long, fairly obscure, and full of pitfalls for those who seek to recreate it.
In Paul Among the People, Sarah Ruden explores the meanings of his words and shows how they might have affected readers in his own time and culture. She describes as well how his writings represented the new church as an alternative to old ways of thinking, feeling, and living.