In witnessing, the role of talking is frequently overemphasized. Does that sound strange? It’s true. Silence and especially true listening are often the strongest testimony of our faith. A major problem for Christian evangelism is not getting people to talk, but to silence those who through their continuous chatter reveal a loveless heart devoid of confidence in God.
Dallas Willard, The Spirit of the Disciplines (New York: HarperCollins, 1998), 165