Back in the day when I started preaching, old sermons were written long hand on yellow legal pads. The process produced a lot of yellow paper in the trash can as well as sermon filled yellow pages for the file cabinet. As my fingers wore out, I stepped into the hi-tech world and started using a manual Royal typewriter which got rid of the yellow paper. At some point a word processor came into the office which made such a quiet process that I had to program my mind to write without the noise of pounding keys. I still went on to use a small forest of pine trees before my mind could grasp the paperless process where "hard copies" were no longer necessary.
I have never embraced change easily. I can remember the number of years I spent at each step of the sermon writing journey. While the means of writing has changed, the process of writing sermons has changed very little. The rules or guidelines with which I started are the ones still embraced. Every sermon needs a heavy dose of praying before the first word becomes visible. The starting point of the sermon is not about a social issue, or a personal opinion, but a text from Scripture. My preaching professor from seminary said what I still remember, "No one comes to hear your personal opinion, they come to hear the Word of God."
Another thing always remembered is that the pulpit is not for teaching. There is a difference in preaching and teaching. Teaching is informational and preaching is persuasive. Preaching is to bring people into an encounter with Jesus that will unleash transforming power in their hearts. Another word which might be used instead of persuasive is invitational. It is imperative that the invitational dimension of preaching not be forgotten or neglected by the preacher.