That's the inert danger of expository preaching it relies heavily on the knowledge of the preacher and can survive without Christ. (redeeminggod.com)
I could look back in history and see that major figures in church history that caused the greatest change for the good in the church practiced expository preaching. (redeeminggod.com)
Smith was known for expository preaching as he worked his way through the entire Bible, unpacking texts from Genesis through Revelation and offering commentary along the way. (christianitytoday.com)