Here’s a great interview with the President of Covenant Theological Seminary, Dr. Bryan Chapell, who is author of the book, Christ-Centered Preaching: Redeeming the Expository Sermon. Some great words on advice on preaching and sermon preparation. I encourage you to watch this if you are a pastor and/or send this along to your pastor if you are not.
What can a pastor do to begin to preach the gospel?
How can I see the gospel through the law?
Motivation: How grace leads to obedience.