God is a missionary, and He chooses to use us in His work of salvation, to seek and save the lost. It is sometimes said that witnessing is the gospel without words but evangelism is a conversation. That may be splitting hairs, but the message of the gospel needs to be clear and people need to understand that through Jesus the bad news has become good news. Evangelism is the proclamation of the message of Jesus. It is not something we do to people it is something we do for people, under the inspiration of the Holy Spirit.
– R. Ian Seymour