One of the methods I am using now to keep my preaching fresh is to use the gift I believe I have been given. What I mean is this.
Often I will read a passage of scripture, and as I am reading it, thoughts come into my mind of how I would preach it, what I would say.
It sometimes frustrates me when I sit in front of an empty screen and that same sense of ‘flow’ does not come.
So what I have done lately is print off the scripture (thankyou Biblegateway) and take that piece of paper into the Ministry Centre here and actually start preaching from it! No commentary, no internet, no computer. I will jot down my notes from that 10 or 15 minutes onto the printed out scripture page.