The word "evangelism" conjures up pictures of campaigns and door knocking. But one of the easiest and still effective means of reaching people with the gospel is to invite them to worship. Jesus invited people to follow Him. When he had found the Messiah, Philip encouraged Nathanael to "Come and see." He did, and the rest is history.
Scriptures: John 1:43-44; John 1:45-49; 1 Corinthians 14:23-25