The word of God brings people to the God of His word.
As preachers we don't just want to give people information about God; it's not a factual exercise. We want to give people an experience of God, we want them to have a revelation about God!
After Jesus met the disciples after his death the experience inspired them to go and share the story with others. The disciples had had a revelation and shared that with others.
To have a revelation about God you need to have confidence; confidence in the story and the fact that the Word of God will speak through people to each of us. As preachers we need to encourage each other to share the word of God and the revelation which is revealed for us.