Make use of a good set of cross references. Compare and contrast with other passages. Finally, apply the Scriptures. This is the process of helping the believer to decide what he or she should do in response to the Scripture. Do not attempt to apply the Scripture until you have interpreted it.
Many preachers like to start their sermon with an illustration or joke.
Illustrations and humour can be used to drive home a point and hold people's attention. Just remember that you are there to preach the Word of God and not to entertain. Each sermon should have a clearly defined introduction, body and conclusion. The introduction should be designed to grab and hold the listeners attention. The body of the sermon can have one or more points.