It is necessary for me to live with a passage, to carry it around with me, and to marinate my soul with its nourishing and thirst-quenching waters. I simply can’t do this in a couple hours. I need meditative time with the passage so the Spirit can work through it in me and through me to the people under my care. I’m about to make some of you angry, but I’m going to say it anyway. If you are developing original content late on a Saturday evening, you have no business preaching it on Sunday. It’s unlikely that you will have understood the full range of the radical gospel glories of the passage, it’s doubtful that they have confronted your heart, and it’s unlikely that you have developed much readiness to communicate them winsomely and practically to your listeners.
The whole post is a good read.